计算机二级C语言教程第14章课后编程题
二级C语言课后编程答案的整理版
3.16main(){ float a,b,c,s,v;printf("input a,b,c:");scanf("%f %f %f:",&a,&b,&c);s=a*b;v=a*b*c;printf("a=%f,b=%f,c=%f\n",a,b,c); printf("s=%f,v=%f\n",s,v);}3.17main(){ int h,m;h=560/60;m=560%60;3.18main(){ int m,n;printf("input m & n:");scanf("%d%d",&m,&n);printf("\n%d,%d\n",m/n,m%n);getch();}3.19main(){ double x,y,z,s;printf("input x,y,z: ");scanf("%lf%lf%lf",&x,&y,&z);s=(x+y+z)/3.0;printf("\nAverage=%6.1lf\n",s);getch();}3.20main(){ int a,b,c,t;printf("Input a,b,c: ");scanf("%d%d%d",&a,&b,&c);t=c;c=b;b=a;a=t;printf("\na,b,c=%d,%d,%d\n",a,b,c); getch();}【4-21】main(){ int a,m;printf("input a: ");scanf("%d",&a);switch(a/10){ case 0:case 1:case 2: m=1 ;break;case 3: m=2 ;break;case 4: m=3 ;break;case 5: m=4 ;break;default: m=5;}printf("a,m=%d, %d",a,m );getch();}【4-22】main(){ int age,y0,m0,d0,y1,m1,d1;printf("\ninput a stedent\' birthday (yy-mm-dd): ");scanf("%d-%d-%d",&y0,&m0,&d0);printf("\ninput today\' date(yy-mm-dd): ");scanf("%d-%d-%d",&y1,&m1,&d1);if ((m1>m0)||(m1==m0)&&(d1>=d0)) age=y1-y0;else age=y1-y0-1;printf("\nThe student\' ageis %d",age);getch();}【4-23】main(){ int m;printf("\ninput a integer: ");scanf("%d",&m);if (m%2==0) printf("\n%d is event.",m);else printf("\n%d is ord.",m);getch();}【4-24】main(){ int a,b,c,max;printf("\ninput a,b,c: ");scanf("%d%d%d",&a,&b,&c);max=a;if (b>max) max=b;if (c>max) max=c;printf("max is %d",max);getch();}【4-25-1】main(){ int x,y;printf("\ninput x: ");scanf("%d",&x);if((x>-5)&&(x<0)) y=x;if (x==0) y=x-1;if ((x>0)&&(x<10)) y=x+1;printf("\nx is %d , y is %d",x,y); getch();}【4-25-2】main(){ int x,y;printf("\ninput x: ");scanf("%d",&x);if((x>-5)&&(x<10)){ if (x<0) y=x;if (x==0) y=x-1;if (x>0) y=x+1;printf("\nx is %d , y is %d",x,y); }else printf("input x iserror ! %c",'\007');getch();}【4-25-3】main(){ int x,y;printf("\ninput x: ");scanf("%d",&x);if ((x>-5)&&(x<0)) y=x;else if (x==0) y=x-1;else if ((x>0)&&(x<10)) y=x+1; printf("\nx is %d , y is %d",x,y); getch();}【4-25-4】main(){ int x,y;printf("\ninput x: ");scanf("%d",&x);switch(x){ case -4:case -3:case -2:case -1: y=x;break;case 0 : y=x-1;break;case 1 :case 2 :case 3 :case 4 :case 5 :case 6 :case 7 :case 8 :case 9 : y=x+1;break;default : printf("Input xerror ! %c",7);}printf("\nx is %d , y is %d",x,y); getch();}【5-17】main(){ int i,s=1,k=-1;for (i=1;i<=50;i++){ s=s+k*(2*i+1);k=-k;}printf("s=%d",s);getch();}【5-18-1】main(){ int i=1;double e=1.0,s=1.0;for(i=1;i<=50;i++){s=s*i;e=e+1/s;}printf("e=%lf",e);getch();}【5-18-2】main(){ int i=1;float e=1.0,s=1.0;while (1/s>=1e-04) /* 8 times */ {s=s*i;i++;e=e+1/s;}printf("e=%10.6f",e);getch();}【5-19】main(){ int y,k=0;for(y=1000;y<=2000;y++){ if (y%4==0&&y%100!=0||y%400==0) {printf("%10d",y);k++;}if (k%3==0) printf("\n");}getch();}【5-20】#include <stdio.h>main(){int i,j,n;printf("Input n (1--10):"); do scanf("%d",&n);while (n<1||n>10);for (i=1;i<=n;i++){for (j=1;j<=40-i;j++)printf(" ");for (j=1;j<=2*i-1;j++)printf("*");printf("\n");}for (i=n+1;i<=2*n-1;i++){ for (j=1;j<=40-2*n+i;j++) printf(" ");for (j=1;j<=4*n-1-2*i;j++) printf("*");printf("\n");}getch();}【6-20】#include <stdio.h>main(){ int k=0; char ch;while((ch=getchar())!=10) { k++;printf("%4c%4d",ch,ch); if(k%3==0) printf("\n"); }getch();}【6-21】#include <stdio.h>main(){ long k=0; char ch;while((ch=getchar())!=EOF) { if (ch>='0'&&ch<='9'){ ch=ch-'0';k=k*10+ch;}}printf("%ld",k);getch();}【6-22】#include <stdio.h>main(){ int flag,k=0; char ch;while((ch=getchar())!=EOF){ if (ch==10) { k++; flag=0; }else flag=1;}if (flag==1) k++;printf("\n The line numberis %d\n",k);getch();}【6-23】#include <stdio.h>main(){ int k=0; char ch;while((ch=getchar())!=10)if (ch>='a'&&ch<='z') k++;printf("\n The lower letter number is %d\n",k);getch();}【6-24】#include <stdio.h>main(){ int i,j,n;printf("Input line number : ");scanf("%d",&n);for(i=1;i<=n;i++){ for (j=1;j<=40-i;j++)printf(" ");for(j=1;j<=2*i-1;j++)printf("%c",64+i);printf("\n");}getch();}【7-15】main(){int a,b;printf("Input a & b:"); scanf("%d%d",&a,&b);printf("\n%d%%%d=%d",a,b,mymod(a,b)); getch();}mymod(int a, int b){int z;z=a%b;return z;}【7-16】float fun(int n){return (1.0/n);}main(){int i,n,k=1;float s=0.0;printf("Input n:");scanf("%d",&n);for(i=1;i<=n;i++){s+=k*fun(i);k=-k;}printf("\ns=%8.6f",s);getch();}【7-17】float f(int m){ float t=1.0;int i;for (i=2;i<=m;i++)t-=1.0/(i*i);return t;}main(){int n;printf("Input n:");scanf("%d",&n);printf("\nt=%8.6f",f(n));getch();}【7-18】#include <math.h>float f(float x){ float z;z=x*x-5*x+4;return z;}main(){float x,y1,y2,y3;printf("Input x: ");scanf("%f",&x);y1=f(2);y2=f(x+15);y3=f(sin(x));printf("y1=%10.4f\n",y1);printf("y2=%10.4f\n",y2);printf("y3=%10.4f\n",y3);printf("\n**** END ****");getch();}【8-17-1】fun(x,y)int *x,*y;{int z1,z2;z1=*x+*y;z2=*x-*y;*x=z1; *y=z2;}main(){int *a,*b,A,B;a=&A,b=&B;printf("input two numbers: ");scanf("%d%d",a,b);printf("a,b=%d,%d\n",*a,*b);printf("before call function:\n"); printf("a=%d b=%d\n",*a,*b);fun(a,b);printf("after call function:\n"); printf("a=%d b=%d\n",*a,*b); getch();}【8-17-2】fun(x,y) float *x,*y;{float z1,z2;z1=*x+*y;z2=*x-*y;*x=z1; *y=z2;}main(){float *a,*b,A,B;a=&A;b=&B;printf("input two real numbers: "); scanf("%f%f",a,b);printf("a,b=%f, %f\n",*a,*b);printf("before call function:\n"); printf("a=%f b=%f\n",*a,*b);fun(a,b);printf("after call function:\n"); printf("a=%f b=%f\n",*a,*b);getch();}【8-18】fun(int *a,int *b,int *c){ int max,min;max=*a;min=*a;if (*b>*a) max=*b;if (*b<*a) min=*b;if (*c>max) max=*c;if (*c<min) min=*c;*a=max;*c=min;}main(){int a,b,c;printf("Input a,b,c: ");scanf("%d%d%d",&a,&b,&c);printf("before call function:\n"); printf("a=%d b=%dc=%d\n",a,b,c);fun(&a,&b,&c);printf("after call function:\n"); printf("max=%d min=%d\n",a,c);getch();}【9-27】#include <ctype.h>main(){ char *s,a[100];int i,k=0,num[10]={0};s=a;printf("Input an number string: "); scanf("%s",s);while(*s!='\0'){ if (isdigit(*s)&&(*s>'0'))num[*s-49]++;if (*s==48) num[9]++;s++;}for (i=0;i<9;i++)printf("%2d-->%3d\n",i+1,num[i]); printf(" 0-->%3d\n",num[9]);printf("***** TOTAL *****\n");for (i=0;i<=9;i++) k+=num[i];printf(" %d ",k);getch();}【9-28】move(int a[10],int n){int i;for (i=n;i<10;i++)a[i-1]=a[i];a[9]=0;}main(){int x[10],i,n;printf("input 10 number:");for(i=0;i<10;i++)scanf("%d",&x[i]);printf("\ninput the N:");scanf("%d",&n);move(x,n);printf("\nAfter move tne member list is :\n");for (i=0;i<10;i++)printf("%d ",x[i]);getch();} 【9-29】main(){int a[100]={0},b[100]={0},i,j;printf("\nInput the number list (end with 32767) :\n ");for(i=0;i<100;i++){scanf("%d",&a[i]);if ( a[i]==32767) break;}i--;odd(a,b,i);printf("\narray B :\n");for (i=0;i<100;i++)if (b[i]!=0) printf("%d ",b[i]); else break;getch();}odd(int a[100],int b[100],int n){ int i,j=0;for(i=0;i<=n;i++)if(a[i]%2!=0) b[j++]=a[i];}【9-30】#include <string.h>sort(char s[],int n){int i,j,p,t;for(j=0;j<(n-1);j++){p=j;for(i=j+1;i<n;i++)if(s[p]<s[i]) p=i;if(p!=j) { t=s[j]; s[j]=s[p];s[p]=t; }}}main(){char *s;int n;printf("\nInput s:");scanf("%s",s);n=strlen(s);sort(s,n);printf("\nthe sorted string is %s\n",s);getch();}【9-31】main(){int a[100],n,*p,i=1;a[0]=-32768; p=a+1;printf("\nInput an number list (end with 32767) :\n");do{scanf("%d",&a[i]);if (a[i]>=a[i-1]) i++;}while(a[i-1]!=32767);printf("\nInput inserted number: "); scanf("%d",&n);p=a;insert(p,n);p=a+1;printf("\nOutput array a:\n");doif (*p!=32767) printf("%d ",*p++); while (*p!=32767);getch();}insert( int *q, int n){ int *k;k=q;while (*q!=32767) q++;*(q+1)=*q;while(q>k){ if (n>*(q-1)) { *q=n; break; }else {q--; *(q+1)=*q; }}}【9-32】main(){int n,a[16]={0},*p;printf("\nInput an number:"); scanf("%d",&n);p=a;change(a,n,p);printf("n=%d\n",n);while(p<=a+15)printf("%d",*p++);}change(x,n,p)int x[16],n,*p;{p=x+15; *p=0;if(n==0) return(0);while(n!=0){*p=n%2;p--;n/=2;}}【9-33】#include <stdio.h>main(){int a[15],*p,i;p=a;frandm(a);printf("\nThe array a is: "); for(i=0;i<15;i++)printf("%d ",*p++);}frandm( a[]);{int k=0,i,x,*q;for (i=0;i<15;i++) a[i]=20; while(k<15){x=rand()%20;for (i=0;i<15;i++)if (a[i]==x ) continue;else a[k++]=x;}}【9-34】#define N 20main(){inta[N][N],x[N]={0},y[N]={0},i,j,m,sum=0 ;printf("\n Input N (<20) :");scanf("%d",&m);printf("\n Input arraya[%d][%d]:\n",m,m);for(i=0;i<m;i++)for(j=0;j<m;j++){ scanf("%d",&a[i][j]);x[i]+=a[i][j]; y[j]+=a[i][j];if (i==j ) sum+=a[i][i];}printf("\n After compute : \n");for (i=0;i<m;i++){ for (j=0;j<m;j++)printf("%5d",a[i][j]);printf("%5d\n",x[i]);}for (i=0;i<m;i++)printf("%5d",y[i]);printf("\n\nSum=%d\n",sum);getch();}【9-35】#define N 20main(){int a[N][N],b[N][N],c[N][N],m,n,i,j; printf("\n Input m,n (<20) :");scanf("%d%d",&m,&n);printf("\n Input arrayA[%d][%d]:\n",m,n);for(i=0;i<m;i++)for(j=0;j<n;j++){ scanf("%d",&a[i][j]);}printf("\n Input arrayB[%d][%d]:\n",m,n);for(i=0;i<m;i++)for(j=0;j<n;j++) { scanf("%d",&b[i][j]);c[i][j]=a[i][j]+b[i][j];}printf("\n After compute array C: \n"); for (i=0;i<m;i++){ for (j=0;j<n;j++)printf("%5d",c[i][j]);printf("\n");}getch();}【9-36】main(){int i,j,k;printf("\n ** A MULTIPLICATION TABLE **\n");printf(" ");for(i=1;i<10;i++)printf("(%3d)",i);printf("\n--------------------------------------------\n");for(i=1;i<10;i++){ for(j=0;j<10;j++)if(j==0) printf("( %d)",i);else printf("%5d",i*j);printf("\n");}printf("\n--------------------------------------------\n");getch();}【9-37】#include "stdio.h"#include "stdlib.h"main(){static int m[5][5]={0},i,j;int k=0;printf("\nBefore :\n");for (i=0;i<5;i++)for(j=0;j<5;j++){ m[i][j]=rand()%100;printf("%4d",m[i][j]);if ((++k)%5==0)printf("\n"); }printf("\nAfter:\n");for (i=0;i<5;i++)for(j=0;j<i;j++){ k=m[i][j]; m[i][j]=m[j][i]; m[j][i]=k; }k=0;for (i=0;i<5;i++)for(j=0;j<5;j++){ printf("%4d",m[i][j]);if ((++k)%5==0)printf("\n"); }printf("\n Program end ! \n");}【9-38】#include "stdio.h"main(){ int m[5][5]={0},i,j;int k=0;printf("\nBefore :\n");for (i=0;i<5;i++)for(j=0;j<5;j++){ m[i][j]=rand()%100;printf("%4d",m[i][j]);if ((++k)%5==0)printf("\n"); }printf("\nAfter:\n");for (i=0;i<5;i++)for(j=0;j<i;j++){ k=m[i][j]; m[i][j]=m[j][i]; m[j][i]=k; }printf("%4d",m[i][j]);if ((++k)%5==0)printf("\n"); }k=0;for (i=0;i<5;i++)for(j=0;j<5;j++) { printf("%4d",m[i][j]);if ((++k)%5==0)printf("\n"); }printf("\n Program end ! \n"); getch();}【10-10】#include <string.h>main(){ char str1[]="string",str2[8],*str3,*str4="string";strcpy(str1,"HELLO1");strcpy(str2,"HELLO2");strcpy(str3,"HELLO3");strcpy(str4,"HELLO4");printf("%s\n%s\n%s\n%s\n",str1,str2,s tr3,str4);getch();}【10-13】main(){char *p[]={"BOOL","OPK","H","SP"}; int i;for(i=3;i>=0;i--,i--)printf("%c",*p[i]);printf("\n");getch();}【10-19】#include <stdio.h>#include <string.h>mygets(s)char *s;{ char ch;ch=getchar();while (ch!=10){*s=ch; s++;ch=getchar();}*s='\0';}myputs(s)char *s;{ int i,n;n=strlen(s);for(i=0;i<n;i++)putchar(*s++);}main(){char *str,s[80];str=s;printf("Input a string:");mygets(str);printf("\nOutput the string:\n"); myputs(str);printf("\n");getch();}【10-20】#include <string.h>main(){ char *str ;str=(char*)malloc(1);printf("Input a string:\n" );gets(str);if (fun(str)) printf("\nThis is back-round-text\n");else printf("\nThis is not back-round-text\n");getch();}fun(char *s){int n,i,j, flag=1;n=strlen(s);for (i=0,j=n-1;i<j;i++,j--)if(*(s+i)!=*(s+j)) flag=0;return(flag);}【10-21】#include <string.h>#include <stdio.h>char deltet(s,n)char *s; int n;{ char ch; if (n>strlen(s)) {printf("\nCANNOT DELETE IT !!! %c",007);return('\0'); }else{ ch=*(s+n);do{ *(s+n)=*(s+n+1); n++; }while(*(s+n-1)!='\0');return(ch);}}main(){char str[80],*p,ch;int n;printf("\nInput a string:\n");p=str+1;gets(p);printf("\nDelete the n'th character: ");scanf("%d",&n);ch=deltet(str,n);printf("\nAfter delete thestring :(ch=%c)\n",ch);for(n=1;n<strlen(str);n++)putchar(*p++);getch();。
《全国计算机等级考试二级教程——C语言程序设计》课后题及参考答案
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《全国计算机等级考试二级教程——Ｃ 语言程序设计》课后题及参考答案 目 录 第一章、第二章、第三章、第四章、第五章、第六章、第七章、第八章、第九章、 第十章、第十一章、第十二章、第十三章、第十四章、第十五章、第十六章 第一章 程序设计基本概念 １．１ 在 ＴＲＵＢＯ Ｃ 环境中用 ＲＵＮ 命令运行一个 Ｃ 程序时，所运行的程序的后缀是。
答案：．ｅｘｅ １．２ Ｃ 语言源程序文件的后缀是，经过编译后，生成文件的后缀是，经过连接后， 生成文件的后缀是。
答案：．ｃ ．ｏｂｊ ．ｅｘｅ １．３ 结构化程序由、、三种基本结构组成。
答案：顺序、选择、循环 第二章 Ｃ 程序设计的初步知识 一、选择题 ２．１ 以下选项中正确的整型常量是 Ａ）１２． Ｂ）－２０ Ｃ）１，０００ Ｄ）４ ５ ６ 答案：Ｂ ２．２ 以下选项中正确的实型常量是 Ａ）０ Ｂ）３． １４１５ Ｃ）０．３２９×１０（２）（１０ 的 ２ 次方） Ｄ）．８７１ 答案：Ｄ ２．３ 以下选项中不正确的实型常量是 Ａ）２．６０７Ｅ－１ Ｂ）０．８１０３ｅ ２ Ｃ）－７７．７７ Ｄ）４５６ｅ－２ 答案：Ｂ ２．４ 以下选项中不合法的用户标识符是 Ａ）ａｂｃ．ｃ Ｂ）ｆｉｌｅ Ｃ）Ｍａｉｎ Ｄ）ＰＲＩＮＴＦ 答案：Ａ ２．５ 以下选项中不合法的用户标识符是 Ａ）＿１２３ Ｂ）ｐｒｉｎｔｆ Ｃ）Ａ￥ Ｄ）Ｄｉｍ 答案：Ｃ ２．６ Ｃ 语言中运算对象必需是整型的运算符是 Ａ）％ Ｂ）／ Ｃ）！ Ｄ）＊＊ 答案：Ａ ２．７ 可在 Ｃ 程序中用作用户标识符的一组标识符是 Ａ）ｖｏｉｄ ｄｅｆｉｎｅ ＷＯＲＤ Ｂ）ａｓ＿ｂ３ ＿１２３ Ｉｆ Ｃ）Ｆｏｒ －ａｂｃ ｃａｓｅ Ｄ）２ｃ ＤＯ ＳＩＧ 答案：Ｂ ２．８ 若变量已正确定义并赋值，符合 Ｃ 语言语法的表达式是 Ａ）ａ＝ａ＋７； Ｂ）ａ＝７＋ｂ＋ｃ，ａ＋＋ Ｃ）ｉｎｔ（１２．３％４） Ｄ）ａ＝ａ＋７＝ｃ＋ｂ 答案：Ｂ ２．９ 以下叙述中正确的是 Ａ）ａ 是实型变量，Ｃ 允许进行以下赋值 ａ＝１０，因此可以这样说：实型变量中允许存放整 型值。
全国计算机等级考试二级教程--C语言程序设计课后习题答案范文
《全国计算机等级考试二级教程--C语言程序设计》课后习题答案第一章1.1 EXE1.2 C OBJ EXE1.3 顺序选择循环第二章一. 选择题2.1 B 2.2 D 2.3 B 2.4 A 2.5 C 2.6 A 2.7 B2.8 B 2.9 D 2.10 C 2.11 B 2.12 B 2.13 A二. 填空题2.14 11 122.15 4.2 4.22.16 { } 定义执行语句2.17 关键字用户标识符2.18 int float double2.19 float a1=1; float a2=1;2.20 存储单元2.213.52.22 (a*b)/c a*b/c a/c*b2.23 把常量10赋给变量s2.24 位1或02.25 8 127 -1282.26 32767 -32768 000002.27 10 8 16三. 上机改错题2.28#include "stdio.h"; 删除行尾的";"main(); / * main function * / 删除")"后的";",注释中的*要紧靠“/”,即应为“/*”和“*/”函数开始处遗失了一个“{”float r,s ; /*/*r is radius*/,/* s is area of circuilar*/*/ 注释符号不可嵌套使用r = 5.0 ;s = 3.14159 * r * r ;printf("%f\n",s) 行尾遗失了“;”函数结束处遗失了一个“}”2.29#include "stdio.h"main /* main function */ main后遗失了“()”{float a,b,c,v; /*a,b,c are sides, v is volume of cube */a=2.0; b=3.0; c=4.0 行尾遗失了“;”printf("%f\n", v) 行尾遗失了“;”}第三章一. 选择题3.1 C 3.2 C 3.3 D 3.4 C 3.5 D 3.6 B 3.7 C 3.8 D 3.9 A 3.10 B3.11 C 3.12 D 3.13 D 3.14 A 3.15 C 3.16 C 3.17 C 3.18 无答案3.19 C 3.20 B二. 填空题3.21 (1)-(2)i=-200,j=2500(3)i=-200j=25003.22 12 0 03.23 一条语句;3.24 ;3.25 100,25.81,1.89234 100 25.81 1.89234 100 25.81 1.892343.26 x=127,x= 127,x= 177,x= 7f,x= 1273.27 x=127,x=127 ,x=$127 ,x=$,x=%06d3.28 a=513.,a= 513.79,a= 513.,a= 513.三. 编程题和改错题3.29 修改后的程序如下：main(){double a,b,c,s,v;printf("input a,b,c:");scanf("%lf%lf%lf",&a,&b,&c);s =a*b;v=a*b*c;printf("a=%f,b=%f,c=%f\n", a,b,c);printf("s=%f,v=%f\n",s,v);}3.30#includemain(){int a=560,b=60;printf("560 minute is %d hour and %d minute.\n",a/b,a%b);}3.31#includemain(){a=1500;b=350;printf("a div b is : %d\n",a/b);printf("a mod b is : %d\n",a%b);}3.32#includemain(){double a,b,c,ave;printf ("input 3 double number : \n");scanf ("%lf%lf%lf",&a,&b,&c);printf ("%.1f\n",(a+b+c)/3);}3.33#includevoid main(){int a,b,c,t;printf("请依次输入整数a,b,c:");scanf("%d%d%d",&a,&b,&c);printf("\n你输入的值是: a=%d,b=%d,c=%d\n",a,b,c);t=b;b=a;a=c;c=t;printf("交换之后的值是:a=%d,b=%d,c=%d\n",a,b,c);}第四章一. 选择题4.1 A 4.2 A 4.3 A 4.4 D 4.5 C 4.6 A 4.7 B 4.8 C 4.9 D 4.10 C二. 填空题4.11 非0 04.12 < > >= <=同级== ！=同级4.13 ! && ||4.15 !4.16 a == b || a < c x > 4 || x < -44.17 14.18 x <= 0 1 > 04.19 3 2 24.20 *#三. 编程题4.21 略4.22/* 检查日期的合法性*/int checkdate(int year, int month, int day){if(year < 1900 || year > 2005){printf("输入的年份无效!\n");return 0;}else if(month < 0 && month > 12){printf("输入的月份无效!\n");return 0;}else if(day <= 0 && day > 31){printf("输入的日期无效!\n");return 0;}else{switch(month){case 4:case 6:case 9:case 11:if(day > 30){printf("输入的日期无效!\n");return 0;}break;case 2:if((year%4 == 0 && year%100 != 0) || year%400 == 0) {if(day > 29){printf("输入的日期无效!\n");return 0;}}elseif(day > 28){printf("输入的出生日期无效!\n"); return 0;}}break;}/* end of switch(m0)*/}return 1;}void main(){int y0, m0, d0; /* 生日*/int y1, m1, d1; /* 当前日期*/int years, months, days; /* 实足年龄*/printf("请输入学生的生日:");scanf("%d%d%d", &y0,&m0,&d0);if(checkdate(y0, m0, d0)){printf("请输入当前日期:");scanf("%d%d%d", &y1,&m1,&d1);/*当前日期合法性检查*/if(!checkdate(y1, m1, d1)){return;}else if(y0 > y1){printf("出生年份比当前年份晚!\n"); return;}else if(y0 == y1){if(m0 > m1){printf("出生年月比当前年月晚!\n"); return;}else if(m0 == m1)if(d0 > d1){printf("出生年月日比当前年月日晚!\n");return;}}}}/* 计算实足年龄*/years = y1 - y0;months = m1 - m0;days = d1 - d0;/* 修正实足年龄天数*/if(days < 0){months--;switch(m1){case 1:case 5:case 7:case 10:case 12:days += 30;break;case 2:case 4:case 6:case 8:case 9:case 11:days += 31;break;case 3:if((y1%4 == 0 && y1%100 != 0) || y1%400 == 0) {days += 29;}else{days += 28;break;}/* end of switch(m1) */}/* end of if(days < 0) *//* 修正实足年龄月数*/if(months < 0){months += 12;years--;}/* end of if(months < 0) */printf("出生日期: %d年%d月%d日\n", y0, m0, d0);printf("当前日期: %d年%d月%d日\n", y1, m1, d1);printf("实足年龄: %d年%d月%d日\n", years, months, days);return;}4.23#includevoid main(){int a;printf ("请输入一个整数:");scanf ("%d",&a);if (a%2==0){printf ("%d 是偶数\n", a);}else{printf ("%d 是奇数\n", a);}}4.24#includevoid main(){int a,b,c,temp,max;printf ("请输入三个整数:");scanf ("%d %d %d",&a,&b,&c);temp=(a>b)? a:b;max=(temp>c)? temp:c;printf ("\n");printf ("你输入的数中最大的是%d.\n",max); }4.25(1)不嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if ( x>-5 && x<0 ){printf("y is %d\n",y=x);}if ( x==0 ){printf("y is %d\n",y=x-1);}if ( x>0 && x<10 ){printf("y is %d\n",y=x+1);}if ( x>=10 || x<=-5){printf("error\n");}}(2)嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);printf("\n");if(x < 0){if(x > -5){printf("y is %d.\n",y=x); }else{printf("error!\n");}}if(0 == x){printf("y is %d.\n",y=x-1); }if(x > 0){if(x < 10){printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}}(3)if_else语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if( x>-5 && x<0 ){printf("y is %d.\n",y=x); }else if( x==0 ){printf("y is %d.\n",y=x-1); }else if( x>0 && x<10 ) {printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}(4)switch语句#includevoid main(){int x,y;printf("input x : ");scanf("%d",&x);switch (x){case -4:case -3:case -2:case -1:printf("y is %d.\n",y=x); break;case 0:printf("y is %d.\n",y=x-1); break;case 1:case 2:case 3:case 4:case 5:case 6:case 7:case 8:case 9:printf("y is %d.\n",y=x+1); break;default:printf("error!\n");}}第五章一. 选择题5.1 D 5.2 C 5.3 B 5.4 C 5.5 C 5.6 B 5.7 D 5.8 A 5.9 D 5.10 D二. 填空题5.11 5 4 65.12 死循环5.13 -15.14 115.15 d=1.0 k++ k<=n5.16 x>=0 x三. 编程题5.17#includevoid main(){int i;int sig = 1;int sum = 0;for(i=1; i<=101; i++,i++){sum += sig*i;sig *= -1;}printf("sum=%d\n", sum);}5.18(1)#includevoid main(){int i;double m=1.0;double e = 1.0;for(i=1; i<50; i++){m *= i;e += 1/m;}printf("e=%f\n",e);}(2)#includevoid main(){int i=1;double m=1.0;double e = 1.0;while(1/m >= 0.0004){m *= i;e += 1/m;i++;}printf("e=%f\n",e);}5.19#includevoid main(){int year;int col = 0;for(year=1600; year<=2000; year++){if((year%4 == 0 && year%100 != 0) || year%400 == 0) {printf("%d\t", year);col++;if(col%5 == 0){printf("\n");}}}printf("\n");}5.20#include#define N 7void main(){int i;int j;int m;int k = N/2;for(i=0; i {m = i-k;if(m < 0){m *= -1;}for(j=0; j {printf(" ");}for(j=0; j<2*(k-m)+1; j++){printf("*");}printf("\n");}}第六章一. 选择题6.1 B 6.2 D 6.3 A 6.4 A 6.5 B 6.6 D 6.7 D 6.8 B 6.9 A 6.10 A 6.11 C二. 填空题6.12 -16.13 16.14 ctype.h6.15 16.16 10A 20B 30C 40D6.177.29 101.298AB6.18 A7.29B101.2986.19 A B C (每个字符后有三个空格)三. 编程题6.20#include#define N 80void main(){int iLoop = 0;gets(str);while(str[iLoop]){printf("%c-%d\t", str[iLoop],str[iLoop]); iLoop++;if(iLoop%3 == 0){printf("\n");}}printf("\n");}6.21#include#define N 80void main(){char str[N];int num = 0;int iLoop = 0;gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9') {num = 10*num + (str[iLoop] - '0');}iLoop++;}printf("%d\n",num);}6.22#include#include#define N 80void main(){char str[N];do{gets(str);num++;}while(strcmp(str, "EOF"));printf("您输入了%d行字符！\n",num);}6.23#include#define N 80void main(){char str[N];int iLoop = 0;int num = 0;gets(str);while(str[iLoop] && iLoop < N){if(str[iLoop] >= 'a' && str[iLoop] <= 'z'){num++;}iLoop++;}printf("您输入了字符中有%d个小写字母！\n",num); }6.24#includevoid main(){int line;int iLoop1;int iLoop2;printf("请输入图案的行数(不大于26):");scanf("%d", &line);for(iLoop1 = 0; iLoop1 < line; iLoop1++){for(iLoop2 = 0; iLoop2 < line - iLoop1; iLoop2++){printf(" ");}for(iLoop2 = 0; iLoop2 < 2*iLoop1+1; iLoop2++) {printf("%c",iLoop1 + 'A');}printf("\n");}}第七章一. 选择题7.1 C 7.2 C 7.3 B 7.4 C 7.5 A 7.6 D 7.7 A二. 填空题7.8 127.9 9.7.10 47.11 n=1 s7.12 <=y z*x7.13 1 s*i 0 f(k)三. 程序调试和编程题7.14fun(int n){ int k,yes;for(k=2; k<=n/2; k++){if(n%k == 0) { yes = 0; break;}else yes = 1;}return yes;}7.15int mymod(int a, int b){return a%b;}7.16double fun(int n){double sum = 0;int iLoop;int sig = -1;for(iLoop=1; iLoop<=n; iLoop++){sig *= -1;sum += sig*1.0/iLoop;}return sum;}7.17double fun(int n){double t = 1.0;int iLoop;long tmp;for(iLoop=2; iLoop<=n; iLoop++){tmp = iLoop*iLoop;t -= 1.0/tmp;}return t;}7.18#include#includedouble fun(double x){return x*x + 5*x + 4;}void main(){int x = 2;printf("y1=%f\n", fun(x));printf("y2=%f\n", fun(x+15));printf("y3=%f\n", fun(sin(x)));}第八章一. 选择题8.1 A 8.2 B 8.3 B 8.4 C 8.5 B 8.6 B 8.7 C 8.8 D 8.9 B 8.10 C 8.11 C 8.12 C8.13 1108.14 7 18.15 (1)char *p=&ch; (2) p=&ch; (3)scanf("%c",p); (4)*p='A'; (5)printf("%c",*p);8.16 (1)s=p+3; (2)s=s-2 (3)50 (4)*(s+1) (5)2 (6)10 20 30 40 50三. 编程题8.17void fun(double x, double y, double *sum, double *div){*sum = x + y;*div = x - y;return;}8.18void fun(double x, double y, double z, double *max, double *min){*max = x;*min = x;if(*max < y){*max = y;}if(*max < z){*max = z;}if(*min > y){*min = y;}if(*min > z){*min = z;}return;}第九章一. 选择题9.1 D 9.2 A 9.3 A 9.4 C 9.5 C 9.6 A 9.7 B 9.8 D 9.9 C 9.10 C9.11 C 9.12 D 9.13 D 9.14 A 9.15 A 9.16 A 9.17 C 9.18 C二. 填空题9.20 69.21 129.22 39.23 27219.24 -850,2,09.25 k=p k9.26 (c=getchar()) c-'A'三. 编程题9.27#include#define N 81int main(){int counter[10] = {0};int iLoop = 0;char str[N];gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9') {counter[str[iLoop] - '0']++;}iLoop++;}for(iLoop=0; iLoop < 10; iLoop++){printf("%d - %d\n", iLoop, counter[iLoop]); }return 0;}9.28void fun(int array[], int arraysize, int start) {int iLoop;if(start < arraysize-1){if(start <=0){start = 1;}for(iLoop = start; iLoop < arraysize; iLoop++){array[iLoop-1] = array[iLoop];}}for(iLoop = 0; iLoop < arraysize; iLoop++){printf("No.%d = %d\n", iLoop, array[iLoop]);}}9.29int fun(int arry1[], int arry2[], int arrysize){int iLoop;int counter = 0;for(iLoop = 0; iLoop < arrysize; iLoop++){if(arry1[iLoop] % 2){arry2[counter++] = arry1[iLoop];}}return counter;}9.30void fun(char array[], int arraysize){int iLoop1;int iLoop2;char temp;/* 冒泡排序*/for(iLoop1 = 0; iLoop1 < arraysize - 1; iLoop1++){for(iLoop2 = 0; iLoop2 < arraysize - 1 - iLoop1; iLoop2++) {if(array[iLoop2] < array[iLoop2 + 1]){temp = array[iLoop2];array[iLoop2] = array[iLoop2 + 1];array[iLoop2 + 1] = temp;}}}}#includevoid fun(int array[], int arraysize, int inertNumber) {int iLoop;int iLoop2;if(array[0] < array[arraysize-1]){for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] > inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}else{for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] < inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}int main(){int iLoop;int a[20] = {7,6,5,3,2,1};for(iLoop = 0; iLoop < 6; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 6, 0);for(iLoop = 0; iLoop < 7; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 7, 4);for(iLoop = 0; iLoop < 8; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 8, 8);for(iLoop = 0; iLoop < 9; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");return 0;}9.32int fun(int number, int array[]) {int iLoop = 0;int iLoop2;int binLen;int midNumber;int div;int remain;midNumber = number;dodiv = midNumber/2;remain = midNumber%2;midNumber = div;array[iLoop++] = remain;}while(midNumber);binLen = iLoop;for(iLoop2 = 0, iLoop = binLen - 1; iLoop2 < iLoop; iLoop2++, iLoop--) {midNumber = array[iLoop2];array[iLoop2] = array[iLoop];array[iLoop] = midNumber;}return binLen;}9.33#include#include#define N 15void fun(int array[], int arraysize){int x;int iLoop;int iLoop2;for(iLoop = 0; iLoop < arraysize; iLoop++){iLoop2 = 0;x = rand()%20;do{if(x == array[iLoop2] && iLoop > 0){x = rand()%20;iLoop2 = 0;}iLoop2++;}while(iLoop2 < iLoop);array[iLoop] = x;}}int main(){int a[N];int iLoop;fun(a, N);for(iLoop = 0; iLoop < N; iLoop++){printf("%d\n", a[iLoop]);}return 0;}第十章一. 选择题10.1 C 10.2 B 10.3 C 10.4 B 10.5 C 10.6 A 10.7 C 10.8 A 10.9 C 10.10 C二. 填空题10.11 GFEDCB10.12 XYZ10.13 SO10.14 1010.15 Itis10.16 strlen(str)-1 j--10.17 310.18 goodgood！三. 编程题10.19char* mygets(char *str){int iLoop = 0;char ch;while((ch=getchar()) != '\n'){str[iLoop++] = ch;}str[iLoop] = '\0';return str;}char * myputs(char *str)int iLoop = 0;while(str[iLoop]){putchar(str[iLoop++]);}putchar('\n');return str;}10.20#include#includeint fun(char *str){int len;int iLoop1;int iLoop2;int result = 1;len = strlen(str);for(iLoop1 = 0, iLoop2 = len - 1; iLoop1 < iLoop2; iLoop1++, iLoop2--) {if(str[iLoop1] != str[iLoop2]){result = 0;break;}}return result;}int main(){char a[20] = "ABCDCBA";char b[20] = "ABCDEBA";printf("%d\n", fun(a));printf("%d\n", fun(b));return 0;}10.21char fun(char *str, int pos){int len;int iLoop;char ch;len = strlen(str);if(pos > len){return NULL;}ch = str[pos];for(iLoop = pos; iLoop < len - 1; iLoop++) {str[iLoop] = str[iLoop + 1];}str[len-1] = '\0';return ch;}第十一章一. 选择题11.1 D 11.2 B 11.3 A 11.4 C二. 填空题11.5 IJKLEFGHABCD11.6 711.7 811.8 *(s+j) i+1 i11.9 1711.10 (*fun)() (*fun)(a+i*h)/h mypoly三. 编程题11.11#include#include#define N 81int main(int argc, char **argv){char sig;int dig;int pos;char str[N] = {'\0'};char outStr[N] = {'\0'};if(argc < 2){sig = '-';dig = 10;}else{sig = argv[1][0];dig = argv[1][1] - '0';}printf("请输入一个字符串："); gets(str);if(sig == '-'){pos = strlen(str) - dig;if(pos <= 0){pos = 0;}strcpy(outStr, str + pos);}else if(sig == '+'){strcpy(outStr, str);pos = strlen(outStr);if(pos > dig){pos = dig;}outStr[pos] = '\0';}printf("处理后的字串为："); printf("%s\n", outStr);return 0;}11.12#include#includevoid movebin(char *bin){int len;int iLoop;len = strlen(bin);for(iLoop = len; iLoop > 0; iLoop--) {bin[iLoop] = bin[iLoop - 1];}return;}void fun(int n, char *bin){int pos;pos = strlen(bin);if(n == 0){return;}if(n == 1){movebin(bin);bin[0] = '1';return;}movebin(bin);bin[0] = (n%2) + '0';n /= 2;fun(n, bin);return;}int main(){int a = 4;char bin[50] = {""};fun(a, bin);printf("%s\n", bin);return 0;}11.13long fun(int n){if(n == 1){return n;}else{return fun(n-1) + n;}}int main(){int num;int sum;printf("请输入一个自然数："); scanf("%d", &num);sum = fun(num);printf("结果是：%d\n", sum);return 0;}11.14#includeint fun(int n){if(n == 0 || n == 1){return 1;}else{return fun(n-1) + fun(n-2); }}int main(){int result;printf("请输入一个自然数：");scanf("%d", &num);result = fun(num);printf("斐波拉契级数为：%d\n", result);return 0;}第十二章一. 选择题12.1 B 12.2 B 12.3 A 12.4 C 12.5 D 12.6 B 12.7 A 12.8 A二. 填空题12.9 2,5,1,2,3,-212.10 2468第十三章一. 选择题13.1 A 13.2 C 13.3 B 13.4 C 13.5 D 13.6 D 13.7 D二. 填空题13.8 ar=9 ar=9 ar=1113.9 int* s *b三. 编程题13.10#define MYALPHA(C) ((C>='A' && C<='Z') || (C>='a' && C<='z')) ? 1 : 0 13.11#define SWAP(t,x,y) {t tmp; tmp=x; x=y; y=tmp;}13.12#include#includeint main(){int *p;int tmp;int iLoop;int iLoop2;p = (int *)malloc(sizeof(int)*3);scanf("%d%d%d", p,p+1,p+2);for(iLoop = 0; iLoop < 2; iLoop++){for(iLoop2 = 0; iLoop2 < 2 - iLoop; iLoop2++){if(*(p + iLoop2) > *(p + iLoop2 + 1)){tmp = *(p + iLoop2);*(p + iLoop2) = *(p + iLoop2 + 1);*(p + iLoop2 + 1) = tmp;}}}printf("%d %d %d\n", *p, *(p+1), *(p+2));free(p);p = NULL;return 0;}第十四章一. 选择题14.1 D 14.2 D 14.3 D 14.4 A 14.5 C 14.6 C 14.7 C 14.8 B二. 填空题14.9 struct link *next14.10 p->next m>p->data14.11 (struct list*) struct list struct list* struct list return h三. 编程题14.12#include#define N 3struct stud{char num[5], name[10];int s[4];double ave;};void readrec(struct stud array[], int size)int iLoop;for(iLoop=0; iLoop {scanf("%s%s%d%d%d%d", array[iLoop].num, array[iLoop].name, &array[iLoop].s[0], &array[iLoop].s[1],&array[iLoop].s[2], &array[iLoop].s[3]);array[iLoop].ave = (array[iLoop].s[0] + array[iLoop].s[1] +array[iLoop].s[2] + array[iLoop].s[3])/4.0;}return;}void writerec(struct stud array[], int size){int iLoop;for(iLoop=0; iLoop{printf("%s\t%s\t%d\t%d\t%d\t%d\t%f\n",array[iLoop].num,array[iLoop].name,array[iLoop].s[0],array[iLoop].s[1],array[iLoop].s[2],array[iLoop].s[3],array[iLoop].ave);}return;}int main(){struct stud stu[N];readrec(stu, N);writerec(stu, N);return 0;}14.13#include#include#define N 100struct node{int data;struct node* next;int seekMaxValue(struct node *pNode){int max;struct node* pMove;pMove = pNode;max = pMove->data;pMove = pMove->next;while(pMove){if(max < pMove->data){max = pMove->data;}pMove = pMove->next;}return max;}struct node* seekMaxValueAddress(struct node *pNode) {int max;struct node* maxAddress;struct node* pMove;pMove = pNode;max = pMove->data;maxAddress = pMove;pMove = pMove->next;while(pMove){if(max < pMove->data){max = pMove->data;maxAddress = pMove;}pMove = pMove->next;}return maxAddress;}int main()struct node* head;struct node* pNode;int iLoop;head = (struct node*)malloc(sizeof(struct node)); pNode = head;pNode->next = NULL;for(iLoop=0; iLoop {pNode->next = (struct node*)malloc(sizeof(struct node)); pNode = pNode->next;pNode->next = NULL;pNode->data = iLoop;}printf("%d\n", seekMaxValue(head->next));printf("%d\n", seekMaxValueAddress(head->next));return 0;}第十五章一. 选择题15.1 D 15.2 A 15.3 B 15.4 A二. 填空题15.515.6 a^a15.7 a|0xffff15.8 x|0xff0015.9 a=(>>2)15.10 ch|0x20第十六章一. 选择题16.1 B 16.2 C二. 填空题16.3 3 !feof(f1) f2 fclose(f1) fclose(f2)16.4 fopen(fname,"w") ch16.5 "r" !feof(fp) fgetc(fp)16.6 CCCCBBBBAAAA三. 编程题16.7#include#define N 10#define LEN 81int main(){char *str[N] = {"AAAAAAAAA", "BBBBBBBBB", "CCCCCCCCC", "DDDDDDDDD", "EEEEEEEEE", "FFFFFFFFF", "GGGGGGGGG", "HHHHHHHHH","IIIIIIIII","JJJJJJJJJ"};char str2[N][LEN];FILE *fp;int iLoop;fp = fopen("str.txt", "w");if(fp == NULL){printf("创建文件失败！\n"); return 1;}else{for(iLoop = 0; iLoop < N; iLoop++) {fputs(str[iLoop], fp);fputs("\n",fp);}}fclose(fp);fp = fopen("str.txt", "r");if(fp == NULL){printf("打开文件失败！\n"); return 1;}else{for(iLoop = 0; iLoop < N; iLoop++) {fgets(str2[iLoop], LEN - 1, fp);}}fclose(fp);for(iLoop = 0; iLoop < N; iLoop++) {printf("%s", str2[iLoop]);}return 0;}16.8#include#define N 10int main(){float num;int iLoop;FILE *fp;fp = fopen("num.bin", "wb+");if(fp == NULL){printf("创建文件失败！\n"); return 1;}/* 从键盘读入10个数并写文件*/ printf("请输入%d个数：", N);for(iLoop = 0; iLoop < N; iLoop++) {scanf("%f", &num);fwrite(&num, sizeof(num), 1, fp); }/* 文件指针回到开始处*/ rewind(fp);/* 从文件读出10个数并显示*/ for(iLoop = 0; iLoop < N; iLoop++) {fread(&num, sizeof(num), 1, fp); printf("%f\n", num);}/* 移文件指针到第四个数开始处*/ fseek(fp, 3L*sizeof(num), SEEK_SET); /* 读入一个新数据*/printf("请输入一个新数据：");scanf("%f", &num);fwrite(&num, sizeof(num), 1, fp);/* 文件指针回到开始处*/rewind(fp);/* 从文件读出10个数并显示*/for(iLoop = 0; iLoop < N; iLoop++) {fread(&num, sizeof(num), 1, fp); printf("%f\n", num);}/* 关闭文件*/fclose(fp);return 0;}。
二级VISUAL+BASIC-14-1
二级VISUAL BASIC-14-1(总分：66.00，做题时间：90分钟)一、{{B}}选择题{{/B}}(总题数：35，分数：59.00)1.按照“后进先出”原则组织数据的数据结构是{{U}} {{/U}}。
∙ A.队列∙ B.栈∙ C.双向链表∙ D.二叉树（分数：2.00）A.B. √C.D.解析：2.下列叙述中正确的是______。
∙ A. 在窗体的Form_Load事件过程中定义的变量是全局变量∙ B. 局部变量的作用域可以超出所定义的过程∙ C. 在某个Sub过程中定义的局部变量可以与其他事件过程中定义的局部变量同名，但其作用域只限于该过程∙ D. 在调用过程时，所有局部变量被系统初始化为0或空字符串（分数：2.00）A.B.C. √D.解析：[解析] 对于选项A，变量的作用域来讲，Form_Load事件过程和Sub过程是一样的；对于选项B，局部变量的作用域只是它所在的过程中；对于选项D，如果使用Static定义的过程，则过程中的局部变量就是“static”型的，即在每次调用过程时，局部变量的值保持不变。
3.改变驱动器列表框的Drive属性值将激活______事件。
∙ A. Change∙ B. Scroll∙ C. KeyDown∙ D. KeyUp（分数：2.00）A. √B.C.解析：[解析] 驱动器列表框控件的相关属性和事件驱动器列表框的Drive属性，用来设置或返回程序运行时所选择的驱动器名。
当驱动器列表框的Drive属性值发生变化时，会触发驱动器列表框的Change事件。
当驱动器列表框的滚动框被重新定位或沿水平或垂直方向滚动时，会触发驱动器列表框的Scroll事件。
在驱动器列表框获得焦点时，按下或松开键盘上的按键，会触发驱动器列表框的KeyDown或KeyUp事件。
4.能够将组合框Combo1中最后一个数据项删除的语句为______。
∙ bo1.RemoveItem Combo1.ListCount∙ bo1.RemoveItem Combo1.ListCount-1∙ bo1.RemoveItem Combo1.ListIndex∙ bo1.RemoveItem Combo1.ListIndex-1（分数：1.00）A.B. √C.D.解析：[解析] 组合框的RemoveItem方法与列表框删除指定项目的方法相同，格式为：RemoveItem(索引值)，而列表中的项目索引值从0开始，因此最后一项的索引值为ListCount-1。
计算机二级C语言第14章 文件
若文件指针fp已正确指向文件，ch为字符型变量，以下不能把字符输出到文件中的语句是( ) A.fget( fp,ch ); B.fputc(ch,fp); C.fprintf( fp, "%c",ch ); D.fwrite( &ch,sizeof(ch),1,fp);
正确答案：A 【解析】fgetc()从文件读入一个字符到指定变量。fputc()将指定字符写入fp文件中，fprintf(),fwrite()均是写入 文件操作函数。因此选项B,C,D错误。答案为A选项。
到fout所指文件中，但函数不完整：
有以下文件打开语句：
fp=fopen("person.dat",__________ );
要求文本文件person.dat可以进行信息查找和信息的补充录入，若文件不存在还可以建立同名新
文件，则下划线处应填入的是（）。
A."a+" B."w" C."w+" D."wb"
正确答案：A 【解析】选项A中，"a+"表示在文件后面添加数据，如果指定的文件不存在， 系统将用在fopen调用中指定的文件名建立新文件，正确；选项B中，"w" 表示以写的方式打开文本文件，如果指定的文件不存在，系统将用fopen调
目录页
CONTENTS PAGE
计算机二级C语言 第14章 文件
以下关于C语言文件的叙述中正确的是（） A.文件由数据序列组成，其类型可以为二进制文件或文本文件 B.文件由记录序列组成，其类型可以为二进制文件或文本文件 C.文件由字符序列组成，其类型可以为二进制文件或文本文件 D.文件由数据序列组成，其类型只能是二进制文件
《全国计算机等级考试二级教程——C语言程序设计》课后习题详细解答及答案
《全国计算机等级考试二级教程——C语言程序设计》习题分析与详细解答第一章程序设计基本概念习题分析与解答1．1 【参考答案】EXE1．2 【参考答案】［1］.C ［2］.OBJ ［3］.EXE1．3 【参考答案】［1］顺序结构［2］选择结构［3］循环结构第二章C程序设计的初步知识习题分析与解答一、选择题2．1 【参考答案】B)2．2 【参考答案】D)2．3 【参考答案】B)2．4 【参考答案】A)2．5 【参考答案】C)2．6 【参考答案】A)2．7 【参考答案】B)2．8 【参考答案】B)2．9 【参考答案】D)2．10 【参考答案】C)2．11 【参考答案】B)2．12 【参考答案】B)2．13 【参考答案】A)二、填空题2．14 【参考答案】［1］11 ［2］122．15 【参考答案】［1］4.2 ［2］4.22．16 【参考答案】［1］{ ［2］} ［3］定义［4］执行2．17 【参考答案】［1］关键字［2］用户标识符2．18 【参考答案】［1］int ［2］float ［3］double2．19 【参考答案】float a1=1.0, a2=1.0；或float a1=1, a2=1;(系统将自动把1转换为1.0)2．20 【参考答案】存储单元2．21 【参考答案】 3.52．22 【参考答案】［1］a*b/c ［2］a/c*b ［3］b/c*a2．23 【参考答案】把10赋给变量s2．24 【参考答案】［1］位［2］1位二进制数据(0或1)2．25 【参考答案】［1］8 ［2］127 ［3］01111111 ［4］-128 [ 5 ] 100000002．26 【参考答案】［1］32767 ［2］-32768 ［3］10000000000000002．27 【参考答案】［1］十［2］八［3］十六三、上机改错题2．28 【分析与解答】第1行的错误：(1) include是一个程序行，因此在此行的最后不应当有分号(;)。
全国计算机二级c语言学习指南课件与历年真题精讲精析 第14章
二级C语言程序设计 学习指南与历年真题精讲精析
第14章 结构体、共用体和用户定义 类型
C语言中可由用户构造的两种数据类型：
1、结构体（struct）
2、共用体（union）
14.1 用typedef说明一种新类型名 1、C语言允许用typedef说明一种新类型名： typedef 类型名 标识符; 2、“类型名”必须是在此语句之前已有定义的类型标 识符，“标识符”是一个用户定义标识符，用作新的 类型名。typedef语句的作用仅仅是用“标识符”来
struct dent*s=&s[0]
则以下表达式中值为2的是_____。 (&s[0])->m s[0].m
B）*(p++)->m
C）(*p).m
*(&s[0])->m
s[0].m
*s[0].m
*&a
a
√
D）*((++p)->m)
*((&s[1])->m)
*s[1].m
*&b
五、函数之间结构体变量的数据传递 1、向函数传递结构体变量的成员 结构体变量中的每个成员可以是简单变量、数组或指针变量 等，作为成员变量，它们可以参与所属类型允许的任何操作。 2、向函数传递结构体变量 结构体变量作实参时，传递给函数对应形参的是它的值，函
}std,pers[3],* pstd; name sex birthday year month day sc[0] sc[1] sc[2] sc[3]
方法2：在说明一个无名结构体类型的同时，直接进行定义： 如：struct { char name[12]; char sex; struct date birthday; float sc[4];
全国计算机等级测验二级教程C语言程序设计课后习题答案
ｍaiｎ(）ﻫ｛ﻫｉnt a，b; ﻫａ=150０；b＝35０;ﻫprintf(＂a diｖb is: %d\n",ａ／b);
ｐrintf("a mod bis :％d\n",a%ｂ)；ﻫ}
3.32
#inｃlｕde
main（)
{ ﻫdｏublｅａ,b,c,ａve；ﻫpriｎtf("input 3 dｏｕbｌe numｂｅｒ：＼n"); ﻫsｃanf (＂％lf%lｆ%lf",&a,&ｂ,&c)；ﻫpｒｉntf (＂％.1f\n＂,(a＋b+c）/3); ﻫ}ﻫ3.３3 ﻫ＃incｌｕｄe
｝
ﻫ第四章ﻫ一.选择题ﻫ4．1 A4.2 A 4.3 A4.4Ｄ ４.５C４.6Ａ４.7 B 4.８C4.9 D４.10 C
二．填空题
4．1１非00ﻫ4.12 <> >=＜=同级== !＝同级ﻫ４.1３! && ||
4．15 ! ﻫ４.16a =＝b |｜ａ＜cｘ＞4｜| x <－4 ﻫ４．171 ﻫ４.18x<=01＞０ﻫ4.193 22
函数结束处遗失了一个“}”
ﻫ2．2９ﻫ#includｅ"stdｉｏ.h＂
maｉｎ/＊maiｎfunｃtioｎ＊／maｉｎ后遗失了“（)”
｛
floata,b,c，v; /*a,b,c aresides, v isvoluｍe ofｃube */ ﻫa=2．0; b=３.0; c=4.0行尾遗失了“;”ﻫv＝a＊b*c;
1.3顺序 选择 循环
ﻫ第二章ﻫ一.选择题ﻫ2.1 B 2.2 D 2.3 B 2.4Ａ ２.5 C２．6Ａ2.7 B
C语言全国计算机二级等级考试教程11章到16章(章节带习题)
第12章 C语言中用户标识符的作用域 和存储类 对变量的进一步讨论
12.1 12.2 12.3 12.4
局部变量、全局变量和存储分类 局部变量及其作用域和生存期 全局变量及其作用域和生存期 函数的存储分类
整形变量 按类型 实型变量 字符变量
局部变量
按有效范围 全局变量 按生存期
auto变量
extern说明符的作用
当在同一个文件中时使用 #include <stdio.h> int p; void f1(int n) p {int s=1; 的 ........ 有 } 效 main() 范 {int a,b,c; 围 ........ } #include <stdio.h> void f1(int n) {int p=1; 局部变量p ........ 的有效范围 } int p; main() {int a,b,c; ........ } p 的 有 效 范 围 #include <stdio.h> void f1(int n) {extern int p=1; 全 局 ........ 变 } 量 p int p; 的 main() 有 {int a,b,c; 效 ........ 范 围 }
static变量
例如： #include <stdio.h> float fac(int n) {static float f=1; f=f*n; return f; }
main() {int j; for(j=1;j<=5;j++) printf("%d!=%.0f\n",j,fac(j)); }
此条语句是在编译时进行的并赋初值，此 条语句程序不会执行它；如果定义局部静 态变量时没有赋初值，编译时会自动赋初 值。用static说明的变量，在退出整个程 序时，才释放内存空间。
《全国计算机等级考试二级教程——C语言程序设计》课后习题详细答案
《全国计算机等级考试二级教程——C语言程序设计》习题分析与详细解答第一章程序设计基本概念习题分析与解答1．1 【参考答案】 EXE1．2 【参考答案】［1］ .C ［2］ .OBJ ［3］ .EXE1．3 【参考答案】［1］顺序结构［2］选择结构［3］循环结构第二章 C程序设计的初步知识习题分析与解答一、选择题2．1 【参考答案】 B)2．2 【参考答案】 D)2．3 【参考答案】 B)2．4 【参考答案】 A)2．5 【参考答案】 C)2．6 【参考答案】 A)2．7 【参考答案】 B)2．8 【参考答案】 B)2．9 【参考答案】 D)2．10 【参考答案】 C)2．11 【参考答案】 B)2．12 【参考答案】 B)2．13 【参考答案】 A)二、填空题2．14 【参考答案】［1］ 11 ［2］ 122．15 【参考答案】［1］ 4.2 ［2］ 4.22．16 【参考答案】［1］ { ［2］ } ［3］定义［4］执行2．17 【参考答案】［1］关键字［2］用户标识符2．18 【参考答案】［1］ int ［2］ float ［3］ double2．19 【参考答案】 float a1=1.0, a2=1.0；或float a1=1, a2=1;(系统将自动把1转换为1.0)2．20 【参考答案】存储单元2．21 【参考答案】 3.52．22 【参考答案】［1］ a*b/c ［2］ a/c*b ［3］ b/c*a2．23 【参考答案】把10赋给变量s2．24 【参考答案】［1］位［2］ 1位二进制数据(0或1)2．25 【参考答案】［1］ 8 ［2］127 ［3］01111111 ［4］-128 [ 5 ] 10000000 2．26 【参考答案】［1］ 32767 ［2］ -32768 ［3］ 10000000000000002．27 【参考答案】［1］十［2］八［3］十六三、上机改错题2．28 【分析与解答】第1行的错误：(1) include是一个程序行，因此在此行的最后不应当有分号(;)。
全国计算机等级考试二级教程--C语言程序设计课后习题答案(最新整理)
4.23 #include
void main() { int a; printf ("请输入一个整数 :"); scanf ("%d",&a); if (a%2==0) { printf ("%d 是偶数\n", a); } else { printf ("%d 是奇数\n", a); } }
《全国计算机等级考试二级教程--C 语言程序设计》课后习题答案
第一章 1.1 EXE 1.2 C OBJ EXE 1.3 顺序 选择 循环
第二章 一. 选择题 2.1 B 2.2 D 2.3 B 2.4 A 2.5 C 2.6 A 2.7 B 2.8 B 2.9 D 2.10 C 2.11 B 2.12 B 2.13 A 二. 填空题 2.14 11 12 2.15 4.2 4.2 2.16 { } 定义 执行语句 2.17 关键字 用户标识符 2.18 int float double 2.19 float a1=1; float a2=1; 2.20 存储单元 2.21 3.5 2.22 (a*b)/c a*b/c a/c*b 2.23 把常量 10 赋给变量 s 2.24 位 1 或 0 2.25 8 127 0111111 -128 10000000 2.26 32767 -32768 1000000000000000 2.27 10 8 16 三. 上机改错题 2.28 #include "stdio.h"; 删除行尾的";" main(); / * main function * / 删除")"后的";",注释中的*要紧靠“/”,即应为“/*”和“*/” 函数开始处遗失了一个“{” float r,s ; /*/*r is radius*/,/* s is area of circuilar*/*/ 注释符号不可嵌套使用 r = 5.0 ; s = 3.14159 * r * r ; printf("%f\n",s) 行尾遗失了“;” 函数结束处遗失了一个“}”
二级C语言程序设计教程课后习题答案(高教版)(优.选)
【4-21】
main()
{ int a,m;
printf("input a: ");
scanf("%d",&a);
switch(a/10)
{ case 0:
case 1:
case 2: m=1 ;break;
case 3: m=2 ;break;
case 4: m=3 ;break;
if (x>0) y=x+1;
printf("\nx is %d , y is %d",x,y);
}
else printf("input x is error ! %c",'\007');
getch();
}
【4-25-3】
main()
{ int x,y;
printf("\ninput x: ");
scanf("%d",&x);
#include <stdio.h>
main() /* main function */
{ float a,b,c,v; /* a,b,c are sides, v is volume of cube */
a=2.0; b=3.0; c=4.0;
v=a*b*c;
printf("%f\n",v);
}
第三章
getch();
}
第四章
【4-1】A【4-2】A【4-3】A【4-4】D【4-5】C【4-6】A【4-7】B【4-8】A
【4-9】D【4-10】A【4-11】非零,零【4-12】<,>,<=,>= ==,!=
二级C语言课本课后习题参考答案
二级C语言课本课后习题参考答案第一章程序设计基本概念**************************************************(1) exe(2) C，obj , exe(3) 顺序，选择，循环***************End of Chapter 1*******************第二章C程序设计的初步知识**************************************************一、选择题(1) B (2) D (3) B (4) A (5) C(6) A (7) B (8) B (9) A (10) C(11)B (12)B (13)A二、填空题(14)11，12(15) 4.2，4.2(16) { ，} 说明，执行(17) 关键字，用户标识符(18) int ,float ,double(19) float a1=1,a2=1 ;(20) 存储单元(21) 3.5(22) a*b/c a/c*b a*(b/c)(23) 10赋给变量s(24) 位，0或1(25) 8 ，255 ，11111111，0，00000000(26) 32767 ，-32768 ，10000000 00000000(27)十，八，十六三、上机改错题——————————————————————————————————————(28) 请指出以下C程序的错误所在＃include stdio.h ;main( ); / * main function * /float r, s; /* /*r is radius*/,/*s is area of circular*/*/r = 5.0 ;s=3.14159 * r * r ;printf("%f\n",s);※正确应为：#include 或#include"stdio.h"main( ) /* main function */{float r,s; /*r is radius, s is area of circular*/r = 5.0 ;s = 3.14159 * r * r ;printf("%f\n",s);} ——————————————————————————————————————(29) 请指出以下C程序的错误所在#include stdio.hmain /* main function */{float a,b,c,v; /*a,b,c are sides, v is volume of cube*/a = 2.0 ;b = 3.0 ;c = 4.0v = a * b * c;printf("%f\n",v);}※正确应为：#include"stdio.h"main( ) /* main function */{float a,b,c,v; /*a,b,c are sides, v is volume of cube*/a = 2.0 ;b = 3.0 ;c = 4.0;v = a * b * c;printf("%f\n",v);}***************End of Chapter 2*******************第三章顺序结构**************************************************一、选择题(1) C (2) C (3) D (4) C (5) D(6) B (7) C (8) D (9) A (10)B(11)C (12)D (13)D (14)A (15)C(16)C (17)C (18)均不对，应为scanf( “%6f”,&c) (18) C (20) B二、填空题(21) ①-200，2500 ②i=-200, j=2500 ③i = -200 , j = 2500(22) 12 ，0 ，0(23) 语句块，{ ；}(24) ；(25) 100<空格>25.81<空格>1.89234 /*可用一个或几个空格作为输入时的间隔符*/ 10025.811.89234 /*Tab(制表符)也可以作为输入时的间隔符*/10025.811.89234 /*CR(回车符)也可以作为输入时的间隔符*/(26) x = 127，x =ццц127，x=ццц177, x=цццц7f, x=ццц127。
14计算机二级c语言试题及答案
14计算机二级c语言试题及答案一、选择题（每题2分，共20分）1. 在C语言中，以下选项中哪一个是合法的变量名？A. 2ndVariableB. intC. _firstVariableD. variable-name答案：C2. C语言中，用于定义一个整型数组的关键字是？A. arrayB. intC. listD. vector答案：B3. 下列哪个选项是C语言中的逻辑运算符？A. &&B. ||C. ==D. <答案：A4. 在C语言中，以下哪个函数用于将字符串复制到另一个字符串中？A. strcpyB. strcatC. strcmpD. strlen答案：A5. C语言中，以下哪个关键字用于声明一个函数？A. defineB. functionC. defD. void答案：D6. 在C语言中，以下哪个选项是正确的注释方式？A. /* This is a comment */B. // This is a commentC. <! This is a comment >D. # This is a comment答案：A7. C语言中，以下哪个选项是正确的整型常量表示？A. 0x1AB. 0b1010C. 0.1D. 1e2答案：A8. 在C语言中，以下哪个选项是正确的浮点型常量表示？A. 1.23B. 1.23e10C. 123.D. .123答案：B9. C语言中，以下哪个选项是正确的字符串常量表示？A. "Hello, World!"B. 'Hello, World!'C. "Hello, World!"D. "Hello, World!"答案：A10. 在C语言中，以下哪个选项是正确的二进制常量表示？A. 0b1010B. 0x2AC. 0101D. 02A答案：A二、填空题（每题2分，共20分）1. C语言中，字符型数据在内存中以_________形式存储。
全国计算机二级C语言课后练习及参考答案试卷
一单项选择题1.逻辑运算符两侧运算对象的数据类型是（D ）。
A）只能是0或1B）只能是0或非0正数C）只能是整型或字符型数据D）可以是任何类型的数据2.已知x＝43，ch＝'A'，y＝0；则表达式（x>＝y&&ch<'B'&&！y）的值是（ C ）。
A）0B）语法错C）1D）“假”3.已知int x＝10，y＝20，z＝30；以下语句执行后x，y，z的值是（ B ）。
y）z＝x；x＝y；y＝z；A）x＝10，y＝20，z＝30B）x＝20，y＝30，z＝30C）x＝20，y＝30，z＝10D）x＝20，y＝30，z＝204.执行下列语句后a的值为（ C ），b的值为（）。
int a，b，c；a＝b＝c＝1；＋＋a|| ＋＋b && ＋＋c；A）错误 1B）2 2C）2 1D） 1 15.若希望当A的值为奇数时，表达式的值为“真”，A的值为偶数时，表达式的值为“假”，则以下不能满足要求的表达式是（C ）。
A）A%2＝＝1B）！（A%2＝＝0）C）！（A%2）D）A%26.设有：int a＝1，b＝2，c＝3，d＝4，m＝2，n＝2；执行（m＝a>D）后n的值是（B ）。
A）0B） 2C）3D） 47.判断char型变量cl是否为小写字母的正确表达式是（D ）。
A）‘a’<＝cl<＝‘z’＝a）&&（cl<＝z）C）（‘a’>＝cl）||（‘z’<＝cl）＝‘a’）&&（cl<＝‘z’）8.以下不正确的if语句形式是（C ）。
y&&x！＝y）；B）if（x＝＝y）x＋＝y；C）if（x！＝y）scanf（“%d”，&x）else scanf（“%d”，&y）D）if（x<y）{x＋＋；y＋＋；}9.请阅读以下程序：main（）{int a＝5，b＝0，c＝0；if（a＝b＋C）printf（“***\n”）；else printf（“$$$\n”）；}以上程序（D ）。
全国二级C语言教材课后题目(含答案)
说明：1、原先的少部分题目有错，请用红色的部分替换掉；2、如果红色部分有文字“删除该行”，就直接删除该行；第一章C语言的基础知识第一节对C语言的初步认识习题1. 下列叙述中错误的是BA）任何一个C程序都必须有且仅有一个main函数，C语言总是从main函数开始执行。
B）C语言中的变量，可以先使用后定义。
C）所有的C语言语句最后都必须有一个分号D）C程序书写格式自由，语句可以从任一列开始书写，一行内可以写多个语句。
第二节熟悉Visual C++习题1. C语言源程序名的后缀是 BA）.exe B）.c C）.obj D）.cp 2. 下列叙述中错误的是DA）计算机不能直接执行用C语言编写的源程序B）C程序经C编译后，生成后缀为.obj的文件是一个二进制文件C）后缀为.obj的文件，经连接程序生成后缀为.exe的文件是一个二进制文件D）后缀为.obj和.exe的二进制文件都可以直接运行3. 用C语言编写的代码程序BA）可立即执行B）是一个源程序C）经过编译即可执行D）经过编译解释才能执行第三节标识符习题1. 按照C语言规定的用户标识符命名规则，不能出现在标识符中的是BA）大写字母B）连接符C）数字字符D）下划线2. 以下选项中不合法的标识符是 CA）print B）FOR C）&a D）_003. 以下叙述中错误的是AA）用户所定义的标识符允许使用关键字B）用户所定义的标识符应尽量做到“见名知意”C）用户所定义的标识符必须以字母或下划线开头D）用户定义的标识符中，大、小写字母代表不同标识4. 可在C程序中用作用户标识符的一组标识符是AA）and B）Date C）HiD）case_2007 y-m-d Dr.TomBigl5. 以下不合法的用户标识符是CA）j2_KEY B）Double C）4d D）_8_6. 以下不能定义为用户标识符的是DA）Main B）_0 C）_int D）sizeof7. 下列选项中，不能用作标识符的是DA）_1234_ B）_1_2 C）int_2_ D）2_int_8. 以下4组用户定义标识符中，全部合法的一组是AA）_main B）If C）txt D）intenclude -max REAL k_2sin turbo 3COM _001第四节数制转换习题1．十进制整数360的八进制为__________，十六进制为_____________。
全国计算机等级考试二级教程--C语言程序设计课后习题答案
《全国计算机等级考试二级教程--C语言程序设计》课后习题答案第一章1.1 EXE1.2 C OBJ EXE1.3 顺序选择循环第二章一. 选择题2.1 B 2.2 D 2.3 B 2.4 A 2.5 C 2.6 A 2.7 B2.8 B 2.9 D 2.10 C 2.11 B 2.12 B 2.13 A二. 填空题2.14 11 122.15 4.2 4.22.16 { } 定义执行语句2.17 关键字用户标识符2.18 int float double2.19 float a1=1; float a2=1;2.20 存储单元2.213.52.22 (a*b)/c a*b/c a/c*b2.23 把常量10赋给变量s2.24 位1或02.25 8 127 0111111 -128 100000002.26 32767 -32768 10000000000000002.27 10 8 16三. 上机改错题2.28#include "stdio.h"; 删除行尾的";"main(); / * main function * / 删除")"后的";",注释中的*要紧靠“/”,即应为“/*”和“*/”函数开始处遗失了一个“{”float r,s ; /*/*r is radius*/,/* s is area of circuilar*/*/ 注释符号不可嵌套使用r = 5.0 ;s = 3.14159 * r * r ;printf("%f\n",s) 行尾遗失了“;”函数结束处遗失了一个“}”2.29#include "stdio.h"main /* main function */ main后遗失了“()”{float a,b,c,v; /*a,b,c are sides, v is volume of cube */a=2.0; b=3.0; c=4.0 行尾遗失了“;”v=a*b*c;printf("%f\n", v) 行尾遗失了“;”}第三章一. 选择题3.1 C 3.2 C 3.3 D 3.4 C 3.5 D 3.6 B 3.7 C 3.8 D 3.9 A 3.10 B3.11 C 3.12 D 3.13 D 3.14 A 3.15 C 3.16 C 3.17 C 3.18 无答案3.19 C 3.20 B二. 填空题3.21 (1)-2002500(2)i=-200,j=2500(3)i=-200j=25003.22 12 0 03.23 一条语句;3.24 ;3.25 100,25.81,1.89234 100 25.81 1.89234 100 25.81 1.89234 3.26 x=127,x= 127,x= 177,x= 7f,x= 1273.27 x=127,x=127 ,x=$127 ,x=$000127,x=%06d3.28 a=513.789215,a= 513.79,a= 513.78921500,a= 513.78921500三. 编程题和改错题3.29 修改后的程序如下：main(){double a,b,c,s,v;printf("input a,b,c:");scanf("%lf%lf%lf",&a,&b,&c);s =a*b;v=a*b*c;printf("a=%f,b=%f,c=%f\n", a,b,c);printf("s=%f,v=%f\n",s,v);}3.30#includemain(){int a=560,b=60;printf("560 minute is %d hour and %d minute.\n",a/b,a%b); }3.31#includemain(){int a,b;a=1500;b=350;printf("a div b is : %d\n",a/b);printf("a mod b is : %d\n",a%b);}3.32#includemain(){double a,b,c,ave;printf ("input 3 double number : \n");scanf ("%lf%lf%lf",&a,&b,&c);printf ("%.1f\n",(a+b+c)/3);}3.33#includevoid main()int a,b,c,t;printf("请依次输入整数a,b,c:");scanf("%d%d%d",&a,&b,&c);printf("\n你输入的值是: a=%d,b=%d,c=%d\n",a,b,c);t=b;b=a;a=c;c=t;printf("交换之后的值是:a=%d,b=%d,c=%d\n",a,b,c);}第四章一. 选择题4.1 A 4.2 A 4.3 A 4.4 D 4.5 C 4.6 A 4.7 B 4.8 C 4.9 D 4.10 C二. 填空题4.11 非0 04.12 < > >= <=同级== ！=同级4.13 ! && ||4.15 !4.16 a == b || a < c x > 4 || x < -44.17 14.18 x <= 0 1 > 04.19 3 2 24.20 *#三. 编程题4.21 略#include/* 检查日期的合法性*/int checkdate(int year, int month, int day) {if(year < 1900 || year > 2005){printf("输入的年份无效!\n");return 0;}else if(month < 0 && month > 12){printf("输入的月份无效!\n");return 0;}else if(day <= 0 && day > 31){printf("输入的日期无效!\n");return 0;}else{switch(month){case 4:case 9:case 11:if(day > 30){printf("输入的日期无效!\n");return 0;}break;case 2:if((year%4 == 0 && year%100 != 0) || year%400 == 0) {if(day > 29){printf("输入的日期无效!\n");return 0;}}else{if(day > 28){printf("输入的出生日期无效!\n");return 0;}}}/* end of switch(m0)*/}return 1;}void main(){int y0, m0, d0; /* 生日*/int y1, m1, d1; /* 当前日期*/int years, months, days; /* 实足年龄*/printf("请输入学生的生日:");scanf("%d%d%d", &y0,&m0,&d0);if(checkdate(y0, m0, d0)){printf("请输入当前日期:");scanf("%d%d%d", &y1,&m1,&d1);/*当前日期合法性检查*/if(!checkdate(y1, m1, d1)){return;}else if(y0 > y1){printf("出生年份比当前年份晚!\n"); return;}else if(y0 == y1){if(m0 > m1){printf("出生年月比当前年月晚!\n"); return;}else if(m0 == m1){if(d0 > d1){printf("出生年月日比当前年月日晚!\n"); return;}}}}/* 计算实足年龄*/years = y1 - y0;months = m1 - m0;days = d1 - d0;/* 修正实足年龄天数*/if(days < 0){months--;switch(m1){case 1:case 5:case 7:case 10:case 12:days += 30;break;case 2:case 4:case 6:case 8:case 9:case 11:days += 31;break;case 3:if((y1%4 == 0 && y1%100 != 0) || y1%400 == 0) {days += 29;}else{days += 28;}break;}/* end of switch(m1) */}/* end of if(days < 0) *//* 修正实足年龄月数*/if(months < 0){months += 12;years--;}/* end of if(months < 0) */printf("出生日期: %d年%d月%d日\n", y0, m0, d0);printf("当前日期: %d年%d月%d日\n", y1, m1, d1);printf("实足年龄: %d年%d月%d日\n", years, months, days);return;}4.23#includevoid main(){int a;printf ("请输入一个整数:"); scanf ("%d",&a);if (a%2==0){printf ("%d 是偶数\n", a);}else{printf ("%d 是奇数\n", a);}}4.24#includevoid main(){int a,b,c,temp,max;printf ("请输入三个整数:"); scanf ("%d %d %d",&a,&b,&c); temp=(a>b)? a:b;max=(temp>c)? temp:c;printf ("\n");printf ("你输入的数中最大的是%d.\n",max); }4.25(1)不嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if ( x>-5 && x<0 ){printf("y is %d\n",y=x);}if ( x==0 ){printf("y is %d\n",y=x-1);}if ( x>0 && x<10 ){printf("y is %d\n",y=x+1);}if ( x>=10 || x<=-5){printf("error\n");}}(2)嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);printf("\n");if(x < 0){if(x > -5){printf("y is %d.\n",y=x); }else{printf("error!\n");}}if(0 == x){printf("y is %d.\n",y=x-1);if(x > 0){if(x < 10){printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}}(3)if_else语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if( x>-5 && x<0 ){printf("y is %d.\n",y=x); }else if( x==0 )printf("y is %d.\n",y=x-1); }else if( x>0 && x<10 ) {printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}(4)switch语句#includevoid main(){int x,y;printf("input x : ");scanf("%d",&x);switch (x){case -4:case -3:case -2:case -1:printf("y is %d.\n",y=x);break;case 0:printf("y is %d.\n",y=x-1);break;case 1:case 2:case 3:case 4:case 5:case 6:case 7:case 8:case 9:printf("y is %d.\n",y=x+1);break;default:printf("error!\n");}}第五章一. 选择题5.1 D 5.2 C 5.3 B 5.4 C 5.5 C 5.6 B 5.7 D 5.8 A 5.9 D 5.10 D二. 填空题5.11 5 4 65.12 死循环5.13 -15.14 115.15 d=1.0 k++ k<=n5.16 x>=0 x三. 编程题5.17#includevoid main(){int i;int sig = 1;int sum = 0;for(i=1; i<=101; i++,i++) {sum += sig*i;sig *= -1;}printf("sum=%d\n", sum); }5.18(1)#includevoid main(){int i;double m=1.0; double e = 1.0;for(i=1; i<50; i++) {m *= i;e += 1/m;}printf("e=%f\n",e); }(2)#includevoid main(){int i=1;double m=1.0; double e = 1.0; while(1/m >= 0.0004) {m *= i;e += 1/m;i++;}printf("e=%f\n",e);}5.19#includevoid main(){int year;int col = 0;for(year=1600; year<=2000; year++){if((year%4 == 0 && year%100 != 0) || year%400 == 0) {printf("%d\t", year);col++;if(col%5 == 0){printf("\n");}}}printf("\n");}5.20#include#define N 7void main(){int i;int j;int m;int k = N/2;for(i=0; i {m = i-k;if(m < 0){m *= -1;}for(j=0; j {printf(" ");}for(j=0; j<2*(k-m)+1; j++) {printf("*");}printf("\n");}第六章一. 选择题6.1 B 6.2 D 6.3 A 6.4 A 6.5 B 6.6 D 6.7 D 6.8 B 6.9 A 6.10 A 6.11 C二. 填空题6.12 -16.13 16.14 ctype.h6.15 16.16 10A 20B 30C 40D6.177.29 101.298AB6.18 A7.29B101.2986.19 A B C (每个字符后有三个空格)三. 编程题6.20#include#define N 80void main(){char str[N];int iLoop = 0;gets(str);while(str[iLoop]){printf("%c-%d\t", str[iLoop],str[iLoop]); iLoop++;if(iLoop%3 == 0){printf("\n");}}printf("\n");}6.21#include#define N 80void main(){char str[N];int num = 0;int iLoop = 0;gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9') {num = 10*num + (str[iLoop] - '0');}iLoop++;}printf("%d\n",num);}6.22#include#include#define N 80void main(){char str[N];int num = -1;do{gets(str);num++;}while(strcmp(str, "EOF"));printf("您输入了%d行字符！\n",num); }#include#define N 80void main(){char str[N];int iLoop = 0;int num = 0;gets(str);while(str[iLoop] && iLoop < N){if(str[iLoop] >= 'a' && str[iLoop] <= 'z'){num++;}iLoop++;}printf("您输入了字符中有%d个小写字母！\n",num); }6.24#includevoid main(){int iLoop1;int iLoop2;printf("请输入图案的行数(不大于26):");scanf("%d", &line);for(iLoop1 = 0; iLoop1 < line; iLoop1++){for(iLoop2 = 0; iLoop2 < line - iLoop1; iLoop2++) {printf(" ");}for(iLoop2 = 0; iLoop2 < 2*iLoop1+1; iLoop2++) {printf("%c",iLoop1 + 'A');}printf("\n");}}第七章一. 选择题7.1 C 7.2 C 7.3 B 7.4 C 7.5 A 7.6 D 7.7 A二. 填空题7.8 127.9 9.0000007.10 47.11 n=1 s7.12 <=y z*x7.13 1 s*i 0 f(k)三. 程序调试和编程题7.14fun(int n){ int k,yes;for(k=2; k<=n/2; k++){if(n%k == 0) { yes = 0; break;} else yes = 1;}return yes;}7.15int mymod(int a, int b){return a%b;}7.16double fun(int n){double sum = 0;int iLoop;int sig = -1;for(iLoop=1; iLoop<=n; iLoop++) {sig *= -1;sum += sig*1.0/iLoop;}return sum;}7.17double fun(int n){double t = 1.0;int iLoop;long tmp;for(iLoop=2; iLoop<=n; iLoop++) {tmp = iLoop*iLoop;t -= 1.0/tmp;}return t;}7.18#includedouble fun(double x){return x*x + 5*x + 4;}void main(){int x = 2;printf("y1=%f\n", fun(x));printf("y2=%f\n", fun(x+15));printf("y3=%f\n", fun(sin(x)));}第八章一. 选择题8.1 A 8.2 B 8.3 B 8.4 C 8.5 B 8.6 B 8.7 C 8.8 D 8.9 B 8.10 C 8.11 C 8.12 C二. 填空题8.13 1108.14 7 18.15 (1)char *p=&ch; (2) p=&ch; (3)scanf("%c",p); (4)*p='A'; (5)printf("%c",*p);8.16 (1)s=p+3; (2)s=s-2 (3)50 (4)*(s+1) (5)2 (6)10 20 30 40 50三. 编程题8.17void fun(double x, double y, double *sum, double *div){*sum = x + y;*div = x - y;return;}8.18void fun(double x, double y, double z, double *max, double *min){*max = x;*min = x;if(*max < y){*max = y;}if(*max < z){}if(*min > y){*min = y;}if(*min > z){*min = z;}return;}第九章一. 选择题9.1 D 9.2 A 9.3 A 9.4 C 9.5 C 9.6 A 9.7 B 9.8 D 9.9 C 9.10 C 9.11 C 9.12 D 9.13 D 9.14 A 9.15 A 9.16 A 9.17 C 9.18 C二. 填空题9.19 9 09.20 69.21 129.22 39.23 27219.24 -850,2,09.25 k=p k9.26 (c=getchar()) c-'A'三. 编程题9.27#include#define N 81int main(){int counter[10] = {0};int iLoop = 0;char str[N];gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9'){counter[str[iLoop] - '0']++;}iLoop++;}for(iLoop=0; iLoop < 10; iLoop++){printf("%d - %d\n", iLoop, counter[iLoop]); }return 0;}9.28void fun(int array[], int arraysize, int start) {int iLoop;if(start < arraysize-1){if(start <=0){start = 1;}for(iLoop = start; iLoop < arraysize; iLoop++) {array[iLoop-1] = array[iLoop];}}for(iLoop = 0; iLoop < arraysize; iLoop++) {printf("No.%d = %d\n", iLoop, array[iLoop]); }}9.29int fun(int arry1[], int arry2[], int arrysize) {int iLoop;int counter = 0;for(iLoop = 0; iLoop < arrysize; iLoop++) {if(arry1[iLoop] % 2){arry2[counter++] = arry1[iLoop];}}return counter;}9.30void fun(char array[], int arraysize){int iLoop1;int iLoop2;char temp;/* 冒泡排序*/for(iLoop1 = 0; iLoop1 < arraysize - 1; iLoop1++){for(iLoop2 = 0; iLoop2 < arraysize - 1 - iLoop1; iLoop2++) {if(array[iLoop2] < array[iLoop2 + 1]){temp = array[iLoop2];array[iLoop2] = array[iLoop2 + 1];array[iLoop2 + 1] = temp;}}}}9.31#includevoid fun(int array[], int arraysize, int inertNumber){int iLoop;int iLoop2;if(array[0] < array[arraysize-1]){for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] > inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}else{for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] < inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}}int main(){int iLoop;int a[20] = {7,6,5,3,2,1};for(iLoop = 0; iLoop < 6; iLoop++){printf("%d ", a[iLoop]);}printf("\n");fun(a, 6, 0);for(iLoop = 0; iLoop < 7; iLoop++){printf("%d ", a[iLoop]);}printf("\n");fun(a, 7, 4);for(iLoop = 0; iLoop < 8; iLoop++){printf("%d ", a[iLoop]);}printf("\n");fun(a, 8, 8);for(iLoop = 0; iLoop < 9; iLoop++){printf("%d ", a[iLoop]);}printf("\n");return 0;}9.32int fun(int number, int array[]){int iLoop = 0;int iLoop2;int binLen;int midNumber;int div;int remain;midNumber = number;do{div = midNumber/2;remain = midNumber%2;midNumber = div;array[iLoop++] = remain;}while(midNumber);binLen = iLoop;for(iLoop2 = 0, iLoop = binLen - 1; iLoop2 < iLoop; iLoop2++, iLoop--) {midNumber = array[iLoop2];array[iLoop2] = array[iLoop];array[iLoop] = midNumber;}return binLen;}9.33#include#include#define N 15void fun(int array[], int arraysize){int x;int iLoop2;for(iLoop = 0; iLoop < arraysize; iLoop++){iLoop2 = 0;x = rand()%20;do{if(x == array[iLoop2] && iLoop > 0){x = rand()%20;iLoop2 = 0;}iLoop2++;}while(iLoop2 < iLoop);array[iLoop] = x;}}int main(){int a[N];int iLoop;fun(a, N);for(iLoop = 0; iLoop < N; iLoop++){printf("%d\n", a[iLoop]);}return 0;}第十章一. 选择题10.1 C 10.2 B 10.3 C 10.4 B 10.5 C 10.6 A 10.7 C 10.8 A 10.9 C 10.10 C二. 填空题10.11 GFEDCB10.12 XYZ10.13 SO10.14 1010.16 strlen(str)-1 j--10.17 310.18 goodgood！三. 编程题10.19char* mygets(char *str){int iLoop = 0;char ch;while((ch=getchar()) != '\n'){str[iLoop++] = ch;}str[iLoop] = '\0';return str;}char * myputs(char *str){int iLoop = 0;while(str[iLoop]){putchar(str[iLoop++]);}putchar('\n');return str;}10.20#include#includeint fun(char *str){int len;int iLoop1;int iLoop2;int result = 1;len = strlen(str);for(iLoop1 = 0, iLoop2 = len - 1; iLoop1 < iLoop2; iLoop1++, iLoop2--) {if(str[iLoop1] != str[iLoop2]){break;}}return result;}int main(){char a[20] = "ABCDCBA";char b[20] = "ABCDEBA";printf("%d\n", fun(a));printf("%d\n", fun(b));return 0;}10.21char fun(char *str, int pos){int len;int iLoop;char ch;len = strlen(str);if(pos > len){return NULL;}ch = str[pos];for(iLoop = pos; iLoop < len - 1; iLoop++) {str[iLoop] = str[iLoop + 1];}str[len-1] = '\0';return ch;}第十一章一. 选择题11.1 D 11.2 B 11.3 A 11.4 C二. 填空题11.5 IJKLEFGHABCD11.6 711.7 811.8 *(s+j) i+1 i11.9 1711.10 (*fun)() (*fun)(a+i*h)/h mypoly三. 编程题11.11#include#include#define N 81int main(int argc, char **argv){char sig;int dig;int pos;char str[N] = {'\0'};char outStr[N] = {'\0'};if(argc < 2){sig = '-';dig = 10;}else{sig = argv[1][0];dig = argv[1][1] - '0';}printf("请输入一个字符串：");gets(str);if(sig == '-'){pos = strlen(str) - dig;if(pos <= 0){pos = 0;}strcpy(outStr, str + pos);}else if(sig == '+'){strcpy(outStr, str);pos = strlen(outStr);if(pos > dig){pos = dig;}outStr[pos] = '\0';}printf("处理后的字串为：");printf("%s\n", outStr);return 0;}11.12#include#includevoid movebin(char *bin){int len;int iLoop;len = strlen(bin);for(iLoop = len; iLoop > 0; iLoop--) {bin[iLoop] = bin[iLoop - 1];}return;}void fun(int n, char *bin){int pos;pos = strlen(bin);if(n == 0){return;}if(n == 1){movebin(bin);bin[0] = '1';return;}movebin(bin);bin[0] = (n%2) + '0';n /= 2;fun(n, bin);return;}int main(){int a = 4;char bin[50] = {""};fun(a, bin);printf("%s\n", bin);return 0;}11.13#includelong fun(int n){if(n == 1){return n;}else{return fun(n-1) + n;}}int main(){int num;int sum;printf("请输入一个自然数："); scanf("%d", &num);sum = fun(num);printf("结果是：%d\n", sum); return 0;}11.14#includeint fun(int n){if(n == 0 || n == 1){return 1;}else{return fun(n-1) + fun(n-2);}}int main(){int num;int result;printf("请输入一个自然数：");scanf("%d", &num);result = fun(num);printf("斐波拉契级数为：%d\n", result);return 0;}第十二章一. 选择题12.1 B 12.2 B 12.3 A 12.4 C 12.5 D 12.6 B 12.7 A 12.8 A二. 填空题12.9 2,5,1,2,3,-212.10 2468第十三章一. 选择题13.1 A 13.2 C 13.3 B 13.4 C 13.5 D 13.6 D 13.7 D二. 填空题13.8 ar=9 ar=9 ar=1113.9 int* s *b三. 编程题13.10#define MYALPHA(C) ((C>='A' && C<='Z') || (C>='a' && C<='z')) ? 1 : 0 13.11#define SWAP(t,x,y) {t tmp; tmp=x; x=y; y=tmp;}13.12#include#includeint main(){int *p;int tmp;int iLoop;int iLoop2;p = (int *)malloc(sizeof(int)*3);scanf("%d%d%d", p,p+1,p+2);for(iLoop = 0; iLoop < 2; iLoop++){for(iLoop2 = 0; iLoop2 < 2 - iLoop; iLoop2++){if(*(p + iLoop2) > *(p + iLoop2 + 1)){tmp = *(p + iLoop2);*(p + iLoop2) = *(p + iLoop2 + 1);*(p + iLoop2 + 1) = tmp;}}}printf("%d %d %d\n", *p, *(p+1), *(p+2));free(p);p = NULL;return 0;}第十四章一. 选择题14.1 D 14.2 D 14.3 D 14.4 A 14.5 C 14.6 C 14.7 C 14.8 B14.9 struct link *next14.10 p->next m>p->data14.11 (struct list*) struct list struct list* struct list return h三. 编程题14.12#include#define N 3struct stud{char num[5], name[10];int s[4];double ave;};void readrec(struct stud array[], int size){int iLoop;for(iLoop=0; iLoop {scanf("%s%s%d%d%d%d", array[iLoop].num, array[iLoop].name, &array[iLoop].s[0], &array[iLoop].s[1],&array[iLoop].s[2], &array[iLoop].s[3]);array[iLoop].ave = (array[iLoop].s[0] + array[iLoop].s[1] +array[iLoop].s[2] + array[iLoop].s[3])/4.0;}return;}void writerec(struct stud array[], int size){int iLoop;for(iLoop=0; iLoop{printf("%s\t%s\t%d\t%d\t%d\t%d\t%f\n",array[iLoop].num,array[iLoop].name,array[iLoop].s[0],array[iLoop].s[1],array[iLoop].s[2],array[iLoop].s[3],array[iLoop].ave);}return;}{struct stud stu[N];readrec(stu, N);writerec(stu, N);return 0;}14.13#include#include#define N 100struct node{int data;struct node* next;};int seekMaxValue(struct node *pNode){int max;struct node* pMove;pMove = pNode;max = pMove->data;pMove = pMove->next;while(pMove){if(max < pMove->data){max = pMove->data;}pMove = pMove->next;}return max;}struct node* seekMaxValueAddress(struct node *pNode) {int max;struct node* maxAddress;struct node* pMove;pMove = pNode;max = pMove->data;maxAddress = pMove;pMove = pMove->next;while(pMove){if(max < pMove->data){max = pMove->data;maxAddress = pMove;}pMove = pMove->next;}return maxAddress;}int main(){struct node* head;struct node* pNode;int iLoop;head = (struct node*)malloc(sizeof(struct node)); pNode = head;pNode->next = NULL;for(iLoop=0; iLoop {pNode->next = (struct node*)malloc(sizeof(struct node)); pNode = pNode->next;pNode->next = NULL;pNode->data = iLoop;}printf("%d\n", seekMaxValue(head->next));printf("%d\n", seekMaxValueAddress(head->next));return 0;}第十五章一. 选择题15.1 D 15.2 A 15.3 B 15.4 A二. 填空题15.5 1111000015.6 a^a15.7 a|0xffff15.8 x|0xff0015.9 a=(012500>>2)15.10 ch|0x20第十六章一. 选择题16.1 B 16.2 C二. 填空题16.3 3 !feof(f1) f2 fclose(f1) fclose(f2) 16.4 fopen(fname,"w") ch16.5 "r" !feof(fp) fgetc(fp)16.6 CCCCBBBBAAAA三. 编程题16.7#include#define N 10#define LEN 81int main(){char *str[N] = {"AAAAAAAAA", "BBBBBBBBB", "CCCCCCCCC", "DDDDDDDDD", "EEEEEEEEE", "FFFFFFFFF", "GGGGGGGGG", "HHHHHHHHH","IIIIIIIII","JJJJJJJJJ"};char str2[N][LEN];FILE *fp;int iLoop;fp = fopen("str.txt", "w");if(fp == NULL){printf("创建文件失败！\n");return 1;}else{for(iLoop = 0; iLoop < N; iLoop++) {fputs(str[iLoop], fp);fputs("\n",fp);}}fclose(fp);fp = fopen("str.txt", "r");if(fp == NULL){printf("打开文件失败！\n"); return 1;}else{for(iLoop = 0; iLoop < N; iLoop++) {fgets(str2[iLoop], LEN - 1, fp);}}fclose(fp);for(iLoop = 0; iLoop < N; iLoop++) {printf("%s", str2[iLoop]);}return 0;}16.8#include#define N 10int main(){float num;int iLoop;FILE *fp;fp = fopen("num.bin", "wb+");if(fp == NULL){printf("创建文件失败！\n");return 1;}/* 从键盘读入10个数并写文件*/ printf("请输入%d个数：", N);for(iLoop = 0; iLoop < N; iLoop++) {scanf("%f", &num);fwrite(&num, sizeof(num), 1, fp);}/* 文件指针回到开始处*/rewind(fp);/* 从文件读出10个数并显示*/for(iLoop = 0; iLoop < N; iLoop++) {fread(&num, sizeof(num), 1, fp); printf("%f\n", num);}/* 移文件指针到第四个数开始处*/ fseek(fp, 3L*sizeof(num), SEEK_SET); /* 读入一个新数据*/printf("请输入一个新数据：");scanf("%f", &num);fwrite(&num, sizeof(num), 1, fp);/* 文件指针回到开始处*/rewind(fp);/* 从文件读出10个数并显示*/for(iLoop = 0; iLoop < N; iLoop++) {fread(&num, sizeof(num), 1, fp); printf("%f\n", num);}/* 关闭文件*/fclose(fp);return 0;}她含着笑，切着冰屑悉索的萝卜，她含着笑，用手掏着猪吃的麦糟，她含着笑，扇着炖肉的炉子的火，她含着笑，背了团箕到广场上去晒好那些大豆和小麦，大堰河，为了生活，在她流尽了她的乳液之后，她就用抱过我的两臂，劳动了。
二级VISUAL+BASIC-14-2
二级VISUAL BASIC-14-2(总分：67.00，做题时间：90分钟)一、选择题(总题数：25，分数：42.00)1.下述语句的运行结果是______。
Dim ai=0a=Array (1, -2, 9, 0, -1, 9)DoK=a(i)For m=10 To k Step-2n=k+mNext mPrint n+mi=i+1Loop While Abs(m+n)＜＞27（分数：2.00）A.3-8 27 √B.3 27 -8C.-8 27 3D.-8 3 27解析：2.若在窗体模块的声明部分声明了如下自定义类型和数组Private Type TemScore As IntegerStrName As StringEnd TypeDim Student(5)As Tem则下面的输出语句中正确的是 ____ 。
（分数：2.00）A.Print Student.Score(2),Student.StrName(2) √B.Print Student.Score,Student.StrNameC.Print Student(2).Score,Student(2).StrNameD.Print Score(2),StrName(2)解析：[解析] 在标准模块中可以声明自定义类型，该类型由Type关键字声明，在声明中要定义类型的所有域。
若用自定义类型声明一个变量，则该变量拥有若干域，取得每个域的值需要用“变量名域名”的形式。
作为一个自定义类型的数组，首先要取出某个数组元素然后才能访问该元素的某个域，所以要想访问Student(2)的域，需要使用Student(2).Score和Student(2).StrName。
3.下列控件属性中，属性值的类型不相同的一项是 ____ 。
（分数：2.00）bel控件的Enabled属性与TextBox控件的Enabled属性B.OptionButton控件的Value属性与CheckBox控件的Value属性√mond控件的Default属性与Command控件的Cancel属性mand控件的Visiblc属性与Form控件的Visible属性解析：[解析] CheckBox控件的Value属性取值是0、1或2；OptionButton控件的Value属性取值是True 或False。
全国计算机等级考试二级教程__C语言程序的设计课后习题答案
《全国计算机等级考试二级教程--C语言程序设计》课后习题答案第一章1.1 EXE1.2 C OBJ EXE1.3 顺序选择循环第二章一. 选择题2.1 B 2.2 D 2.3 B 2.4 A 2.5 C 2.6 A 2.7 B2.8 B 2.9 D 2.10 C 2.11 B 2.12 B 2.13 A二. 填空题2.14 11 122.15 4.2 4.22.16 { } 定义执行语句2.17 关键字用户标识符2.18 int float double2.19 float a1=1; float a2=1;2.20 存储单元2.213.52.22 (a*b)/c a*b/c a/c*b2.23 把常量10赋给变量s2.24 位 1或02.25 8 127 0111111 -128 100000002.26 32767 -32768 10000000000000002.27 10 8 16三. 上机改错题2.28#include "stdio.h"; 删除行尾的";"main(); / * main function * / 删除")"后的";",注释中的*要紧靠“/”,即应为“/*”和“*/”函数开始处遗失了一个“{”float r,s ; /*/*r is radius*/,/* s is area of circuilar*/*/ 注释符号不可嵌套使用r = 5.0 ;s = 3.14159 * r * r ;printf("%f\n",s) 行尾遗失了“;”函数结束处遗失了一个“}”2.29#include "stdio.h"main /* main function */ main后遗失了“()”{float a,b,c,v; /*a,b,c are sides, v is volume of cube */a=2.0; b=3.0; c=4.0 行尾遗失了“;”v=a*b*c;printf("%f\n", v) 行尾遗失了“;”}第三章一. 选择题3.1 C 3.2 C 3.3 D 3.4 C 3.5 D 3.6 B 3.7 C 3.8 D 3.9 A 3.10 B3.11 C 3.12 D 3.13 D 3.14 A 3.15 C 3.16 C 3.17 C 3.18 无答案 3.19 C 3.20 B二. 填空题3.21 (1)-2002500(2)i=-200,j=2500(3)i=-200j=25003.22 12 0 03.23 一条语句 ;3.24 ;3.25 100,25.81,1.89234 100 25.81 1.89234 100 25.81 1.892343.26 x=127,x= 127,x= 177,x= 7f,x= 1273.27 x=127,x=127 ,x=$127 ,x=$000127,x=%06d3.28 a=513.789215,a= 513.79,a= 513.78921500,a= 513.78921500三. 编程题和改错题3.29 修改后的程序如下：main(){double a,b,c,s,v;printf("input a,b,c:");scanf("%lf%lf%lf",&a,&b,&c);s =a*b;v=a*b*c;printf("a=%f,b=%f,c=%f\n", a,b,c);printf("s=%f,v=%f\n",s,v);}3.30#includemain(){int a=560,b=60;printf("560 minute is %d hour and %d minute.\n",a/b,a%b);}3.31#include{int a,b;a=1500;b=350;printf("a div b is : %d\n",a/b);printf("a mod b is : %d\n",a%b);}3.32#includemain(){double a,b,c,ave;printf ("input 3 double number : \n");scanf ("%lf%lf%lf",&a,&b,&c);printf ("%.1f\n",(a+b+c)/3);}3.33#includevoid main(){int a,b,c,t;printf("请依次输入整数a,b,c:");scanf("%d%d%d",&a,&b,&c);printf("\n你输入的值是: a=%d,b=%d,c=%d\n",a,b,c);t=b;b=a;a=c;c=t;printf("交换之后的值是:a=%d,b=%d,c=%d\n",a,b,c);}第四章一. 选择题4.1 A 4.2 A 4.3 A 4.4 D 4.5 C 4.6 A 4.7 B 4.8 C 4.9 D 4.10 C二. 填空题4.11 非0 04.12 < > >= <=同级 == ！=同级4.13 ! && ||4.15 !4.16 a == b || a < c x > 4 || x < -44.17 14.18 x <= 0 1 > 04.19 3 2 24.20 *#三. 编程题4.22#include/* 检查日期的合法性 */int checkdate(int year, int month, int day){if(year < 1900 || year > 2005){printf("输入的年份无效!\n");return 0;}else if(month < 0 && month > 12){printf("输入的月份无效!\n");return 0;}else if(day <= 0 && day > 31){printf("输入的日期无效!\n");return 0;}else{switch(month){case 4:case 6:case 9:case 11:if(day > 30){printf("输入的日期无效!\n");return 0;}break;case 2:if((year%4 == 0 && year%100 != 0) || year%400 == 0) {if(day > 29){printf("输入的日期无效!\n");return 0;}else{if(day > 28){printf("输入的出生日期无效!\n"); return 0;}}break;}/* end of switch(m0)*/}return 1;}void main(){int y0, m0, d0; /* 生日 */int y1, m1, d1; /* 当前日期 */int years, months, days; /* 实足年龄*/printf("请输入学生的生日:");scanf("%d%d%d", &y0,&m0,&d0);if(checkdate(y0, m0, d0)){printf("请输入当前日期:");scanf("%d%d%d", &y1,&m1,&d1);/*当前日期合法性检查*/if(!checkdate(y1, m1, d1)){return;}else if(y0 > y1){printf("出生年份比当前年份晚!\n"); return;}else if(y0 == y1){if(m0 > m1){printf("出生年月比当前年月晚!\n"); return;else if(m0 == m1){if(d0 > d1){printf("出生年月日比当前年月日晚!\n"); return;}}}}/* 计算实足年龄 */years = y1 - y0;months = m1 - m0;days = d1 - d0;/* 修正实足年龄天数*/if(days < 0){months--;switch(m1){case 1:case 5:case 7:case 10:case 12:days += 30;break;case 2:case 4:case 6:case 8:case 9:case 11:days += 31;break;case 3:if((y1%4 == 0 && y1%100 != 0) || y1%400 == 0) {days += 29;}elsedays += 28;}break;}/* end of switch(m1) */}/* end of if(days < 0) *//* 修正实足年龄月数*/if(months < 0){months += 12;years--;}/* end of if(months < 0) */printf("出生日期: %d年%d月%d日\n", y0, m0, d0);printf("当前日期: %d年%d月%d日\n", y1, m1, d1);printf("实足年龄: %d年%d月%d日\n", years, months, days);return;}4.23#includevoid main(){int a;printf ("请输入一个整数 :");scanf ("%d",&a);if (a%2==0){printf ("%d 是偶数\n", a);}else{printf ("%d 是奇数\n", a);}}4.24#includevoid main()int a,b,c,temp,max;printf ("请输入三个整数 :");scanf ("%d %d %d",&a,&b,&c);temp=(a>b)? a:b;max=(temp>c)? temp:c;printf ("\n");printf ("你输入的数中最大的是 %d.\n",max); }4.25(1)不嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if ( x>-5 && x<0 ){printf("y is %d\n",y=x);}if ( x==0 ){printf("y is %d\n",y=x-1);}if ( x>0 && x<10 ){printf("y is %d\n",y=x+1);}if ( x>=10 || x<=-5){printf("error\n");}}(2)嵌套的if语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);printf("\n");if(x < 0){if(x > -5){printf("y is %d.\n",y=x); }else{printf("error!\n");}}if(0 == x){printf("y is %d.\n",y=x-1); }if(x > 0){if(x < 10){printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}}(3)if_else语句#includevoid main(){int x,y;printf("input x :");scanf("%d",&x);if( x>-5 && x<0 ){printf("y is %d.\n",y=x); }else if( x==0 ){printf("y is %d.\n",y=x-1); }else if( x>0 && x<10 ){printf("y is %d.\n",y=x+1); }else{printf("error!\n");}}(4)switch语句#includevoid main(){int x,y;printf("input x : ");scanf("%d",&x);switch (x){case -4:case -3:case -2:case -1:printf("y is %d.\n",y=x); break;case 0:printf("y is %d.\n",y=x-1); break;case 1:case 2:case 3:case 4:case 5:case 6:case 7:case 8:case 9:printf("y is %d.\n",y=x+1); break;default:printf("error!\n");}}第五章一. 选择题5.1 D 5.2 C 5.3 B 5.4 C 5.5 C 5.6 B 5.7 D 5.8 A 5.9 D 5.10 D二. 填空题5.11 5 4 65.12 死循环5.13 -15.14 115.15 d=1.0 k++ k<=n5.16 x>=0 x三. 编程题5.17#includevoid main(){int i;int sig = 1;int sum = 0;for(i=1; i<=101; i++,i++){sum += sig*i;sig *= -1;}printf("sum=%d\n", sum);}5.18(1)#includevoid main(){int i;double m=1.0;double e = 1.0;for(i=1; i<50; i++){m *= i;e += 1/m;}printf("e=%f\n",e);(2)#includevoid main(){int i=1;double m=1.0;double e = 1.0;while(1/m >= 0.0004){m *= i;e += 1/m;i++;}printf("e=%f\n",e);}5.19#includevoid main(){int year;int col = 0;for(year=1600; year<=2000; year++){if((year%4 == 0 && year%100 != 0) || year%400 == 0) {printf("%d\t", year);col++;if(col%5 == 0){printf("\n");}}}printf("\n");}5.20#include#define N 7void main(){int i;int j;int m;int k = N/2;for(i=0; i {m = i-k;if(m < 0){m *= -1;}for(j=0; j {printf(" ");}for(j=0; j<2*(k-m)+1; j++){printf("*");}printf("\n");}}第六章一. 选择题6.1 B 6.2 D 6.3 A 6.4 A 6.5 B 6.6 D 6.7 D 6.8 B 6.9 A 6.10 A 6.11 C二. 填空题6.12 -16.13 16.14 ctype.h6.15 16.16 10A 20B 30C 40D6.177.29 101.298AB6.18 A7.29B101.2986.19 A B C (每个字符后有三个空格)三. 编程题6.20#include#define N 80void main(){char str[N];int iLoop = 0;gets(str);while(str[iLoop]){printf("%c-%d\t", str[iLoop],str[iLoop]); iLoop++;if(iLoop%3 == 0){printf("\n");}}printf("\n");}6.21#include#define N 80void main(){char str[N];int num = 0;int iLoop = 0;gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9') {num = 10*num + (str[iLoop] - '0');}iLoop++;}printf("%d\n",num);}6.22#include#include#define N 80void main()char str[N];int num = -1;do{gets(str);num++;}while(strcmp(str, "EOF"));printf("您输入了%d行字符！\n",num);}6.23#include#define N 80void main(){char str[N];int iLoop = 0;int num = 0;gets(str);while(str[iLoop] && iLoop < N){if(str[iLoop] >= 'a' && str[iLoop] <= 'z'){num++;}iLoop++;}printf("您输入了字符中有%d个小写字母！\n",num); }6.24#includevoid main(){int line;int iLoop1;int iLoop2;printf("请输入图案的行数(不大于26):");scanf("%d", &line);for(iLoop1 = 0; iLoop1 < line; iLoop1++)for(iLoop2 = 0; iLoop2 < line - iLoop1; iLoop2++) {printf(" ");}for(iLoop2 = 0; iLoop2 < 2*iLoop1+1; iLoop2++) {printf("%c",iLoop1 + 'A');}printf("\n");}}第七章一. 选择题7.1 C 7.2 C 7.3 B 7.4 C 7.5 A 7.6 D 7.7 A二. 填空题7.8 127.9 9.0000007.10 47.11 n=1 s7.12 <=y z*x7.13 1 s*i 0 f(k)三. 程序调试和编程题7.14fun(int n){ int k,yes;for(k=2; k<=n/2; k++){if(n%k == 0) { yes = 0; break;}else yes = 1;}return yes;}7.15int mymod(int a, int b){return a%b;}7.16double fun(int n){double sum = 0;int iLoop;int sig = -1;for(iLoop=1; iLoop<=n; iLoop++){sig *= -1;sum += sig*1.0/iLoop;}return sum;}7.17double fun(int n){double t = 1.0;int iLoop;long tmp;for(iLoop=2; iLoop<=n; iLoop++){tmp = iLoop*iLoop;t -= 1.0/tmp;}return t;}7.18#include#includedouble fun(double x){return x*x + 5*x + 4;}void main(){int x = 2;printf("y1=%f\n", fun(x));printf("y2=%f\n", fun(x+15));printf("y3=%f\n", fun(sin(x)));}第八章一. 选择题8.1 A 8.2 B 8.3 B 8.4 C 8.5 B 8.6 B 8.7 C 8.8 D 8.9 B 8.10 C 8.11 C 8.12 C二. 填空题8.14 7 18.15 (1)char *p=&ch; (2) p=&ch; (3)scanf("%c",p); (4)*p='A'; (5)printf("%c",*p);8.16 (1)s=p+3; (2)s=s-2 (3)50 (4)*(s+1) (5)2 (6)10 20 30 40 50三. 编程题8.17void fun(double x, double y, double *sum, double *div){*sum = x + y;*div = x - y;return;}8.18void fun(double x, double y, double z, double *max, double *min){*max = x;*min = x;if(*max < y){*max = y;}if(*max < z){*max = z;}if(*min > y){*min = y;}if(*min > z){*min = z;}return;}第九章一. 选择题9.1 D 9.2 A 9.3 A 9.4 C 9.5 C 9.6 A 9.7 B 9.8 D 9.9 C 9.10 C9.11 C 9.12 D 9.13 D 9.14 A 9.15 A 9.16 A 9.17 C 9.18 C二. 填空题9.19 9 09.21 129.22 39.23 27219.24 -850,2,09.25 k=p k9.26 (c=getchar()) c-'A'三. 编程题9.27#include#define N 81int main(){int counter[10] = {0};int iLoop = 0;char str[N];gets(str);while(str[iLoop]){if(str[iLoop] >= '0' && str[iLoop] <= '9'){counter[str[iLoop] - '0']++;}iLoop++;}for(iLoop=0; iLoop < 10; iLoop++){printf("%d - %d\n", iLoop, counter[iLoop]);}return 0;}9.28void fun(int array[], int arraysize, int start) {int iLoop;if(start < arraysize-1){if(start <=0){start = 1;}for(iLoop = start; iLoop < arraysize; iLoop++){array[iLoop-1] = array[iLoop];}}for(iLoop = 0; iLoop < arraysize; iLoop++){printf("No.%d = %d\n", iLoop, array[iLoop]);}}9.29int fun(int arry1[], int arry2[], int arrysize){int iLoop;int counter = 0;for(iLoop = 0; iLoop < arrysize; iLoop++){if(arry1[iLoop] % 2){arry2[counter++] = arry1[iLoop];}}return counter;}9.30void fun(char array[], int arraysize){int iLoop1;int iLoop2;char temp;/* 冒泡排序 */for(iLoop1 = 0; iLoop1 < arraysize - 1; iLoop1++){for(iLoop2 = 0; iLoop2 < arraysize - 1 - iLoop1; iLoop2++) {if(array[iLoop2] < array[iLoop2 + 1]){temp = array[iLoop2];array[iLoop2] = array[iLoop2 + 1];array[iLoop2 + 1] = temp;}}}}9.31#includevoid fun(int array[], int arraysize, int inertNumber) {int iLoop;int iLoop2;if(array[0] < array[arraysize-1]){for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] > inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}else{for(iLoop = 0; iLoop< arraysize; iLoop++){if(array[iLoop] < inertNumber){for(iLoop2 = arraysize - 1; iLoop2 >= iLoop; iLoop2--) {array[iLoop2 + 1] = array[iLoop2];}array[iLoop] = inertNumber;break;}}if(iLoop >= arraysize){array[arraysize] = inertNumber;}}}int main(){int iLoop;int a[20] = {7,6,5,3,2,1};for(iLoop = 0; iLoop < 6; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 6, 0);for(iLoop = 0; iLoop < 7; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 7, 4);for(iLoop = 0; iLoop < 8; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");fun(a, 8, 8);for(iLoop = 0; iLoop < 9; iLoop++) {printf("%d ", a[iLoop]);}printf("\n");return 0;}9.32int fun(int number, int array[]) {int iLoop = 0;int iLoop2;int binLen;int midNumber;int div;int remain;midNumber = number;do{div = midNumber/2;remain = midNumber%2;midNumber = div;array[iLoop++] = remain;}while(midNumber);binLen = iLoop;for(iLoop2 = 0, iLoop = binLen - 1; iLoop2 < iLoop; iLoop2++, iLoop--) {midNumber = array[iLoop2];array[iLoop2] = array[iLoop];array[iLoop] = midNumber;}return binLen;}9.33#include#include#define N 15void fun(int array[], int arraysize){int x;int iLoop;int iLoop2;for(iLoop = 0; iLoop < arraysize; iLoop++){iLoop2 = 0;x = rand()%20;do{if(x == array[iLoop2] && iLoop > 0){x = rand()%20;iLoop2 = 0;}iLoop2++;}while(iLoop2 < iLoop);array[iLoop] = x;}}int main(){int a[N];int iLoop;fun(a, N);for(iLoop = 0; iLoop < N; iLoop++){printf("%d\n", a[iLoop]);}return 0;}第十章一. 选择题10.1 C 10.2 B 10.3 C 10.4 B 10.5 C 10.6 A 10.7 C 10.8 A 10.9 C 10.10 C二. 填空题10.11 GFEDCB10.12 XYZ10.13 SO10.14 1010.15 Itis10.16 strlen(str)-1 j--10.17 310.18 goodgood！三. 编程题10.19char* mygets(char *str){int iLoop = 0;char ch;while((ch=getchar()) != '\n'){str[iLoop++] = ch;}str[iLoop] = '\0';return str;}char * myputs(char *str){int iLoop = 0;while(str[iLoop]){putchar(str[iLoop++]);}putchar('\n');return str;}10.20#include#includeint fun(char *str){int len;int iLoop1;int iLoop2;int result = 1;len = strlen(str);for(iLoop1 = 0, iLoop2 = len - 1; iLoop1 < iLoop2; iLoop1++, iLoop2--) {if(str[iLoop1] != str[iLoop2]){result = 0;break;}}return result;}int main(){char a[20] = "ABCDCBA";char b[20] = "ABCDEBA";printf("%d\n", fun(a));printf("%d\n", fun(b));return 0;}10.21char fun(char *str, int pos){int len;int iLoop;char ch;len = strlen(str);if(pos > len){return NULL;}ch = str[pos];for(iLoop = pos; iLoop < len - 1; iLoop++) {str[iLoop] = str[iLoop + 1];}str[len-1] = '\0';return ch;}。