C程序设计期末复习题库(昆工版)

C语言期末复习资料答案学校：昆明理工大学学院：信息工程与自动化学院班级：计科122班姓名：邹华宇学号：201210405204二、读程序题T1：T2：T3：T4：T5：T6：T7：T8：T9：T10：T11：T12：T13：T14：T15：T16：T17：T18:T19:T20:T21:T22:T23：T24：T25：T26：T27：T28:T29:T30:T31:T32:T33:T34:T35:T36:T37:T38:T39:T40:T41:T42T43:T44:T45:T46:T47:T48：T49：T50:三、编程题Text 1:P88#include <stdio.h>int main(){int a,b,c,t;float ave;printf("请输入三个整数:");scanf("%d,%d,%d",&a,&b,&c);ave=(a+b+c)/3.0;if(a>b) {t=a; a=b; b=t;}//借助变量t，实现变量a和变量b互换值//互换后，a小于或等于b，即a是a，b中的小者if(a>c) {t=a; a=c; c=t;}//借助变量t，实现变量a和变量c互换值//互换后，a小于或等于c，a是a，c中的小者，因此a是三者中最小者if(b>c) {t=b; b=c; c=t;}//借助变量t，实现变量b和变量c互换值//互换后，b小于或等于c，b是b，c中的小者，也是三者中次小者printf("排序为：%d,%d,%d\n",a,b,c);//顺序输出a,b,c的值printf("average=%f\n",ave);return 0;}Text 2:#include <stdio.h>int main(){int x,y;printf("input x:\n");scanf("%d",&x);if (x<-1)y=x-3;else if(x<=1)y=x;else y=x+3;printf("x=%d,y=%d\n",x,y);return 0;}Text 3#include<stdio.h> #include<math.h> int main( ){float a,b,c,s,area;printf("请输入三角形的三边长:");scanf("%f,%f,%f",&a,&b,&c);if (a+b>c&&b+c>a&&a+c>b){if (c*c==a*a+b*b)area=a*b/2;else{s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c));}printf("面积=%.2f\n",area);}elseprintf("不是有效的三角形\n");return 0;}Text 4:P37#include<stdio.h>int main(){float c,f;//定义f和c为单精度浮点型变量printf("请输入华氏温度:");scanf("%f",&f);c=5*(f-32)/9.0;//利用公式计算c的值printf("摄氏温度=%.2f\n",c);}Text 5:P137#include <stdio.h>#include <math.h>int main(){int n,k,i,m=0;for(n=201;n<=300;n=n+2)//n从200变化到300，对每个n进行判定{k=sqrt(n);for (i=2;i<=k;i++)if(n%i==0)break;//如果n被i整除，终止内循环，此时i<k+1if(i>=k+1)//若i>=k+1,表示n未曾被整除{printf("%d ",n);//应确定n是素数m=m+1;//m用来控制换行，一行内输出10个素数}if(m%10==0) printf("\n");//m累计到10的倍数，换行}printf ("\n");return 0;}Text 6:P147#include <stdio.h>int main(){int i,j,max,a[21];printf("enter 20 data:\n");for (i=1;i<=20;i++){printf("a[%d]=",i);scanf("%d",&a[i]);}printf("\n");printf("The orginal numbers:\n");for (i=1;i<=20;i++)printf("%5d",a[i]);printf("\n");for (i=1;i<=19;i++){max=i;for (j=i+1;j<=20;j++)if (a[max]<a[j]) max=j;a[0]=a[i];a[i]=a[max];a[max]=a[0];}printf("\nThe sorted numbers:\n");for (i=1;i<=20;i++)printf("%5d",a[i]);printf("\n");return 0;}Text 7:#include<stdio.h>#include<string.h>main(){int n,i,j;char t,a[20];printf("please enter some dota:\n");gets(a);n=strlen(a);//n是字符串的长度for(i=0;i<=n-2;i++) //字符串排序与数字排序类似。

for(j=i+1;j<=n-1;j++)if(a[i]>a[j]){t=a[i];a[i]=a[j];a[j]=t;}//交换两变量的值printf("the sorted dota:\n");puts(a);}Text 8:#include <stdio.h>void main (){int a=1,k,j;long int num, sum=0;for(k=1;k<10;k++){num=0;for (j=1;j<=k;j++)num=num*10+a;sum=sum+num;printf("%ld\n",num);a++;}printf("1+22+333+...+999999999=%ld\n",sum); }Text 9:#include <stdio.h>int main (){float s=1.0,t=1.0;int n=1;while(t>=1e-4){t=t/n;s=s+t;n=n+1;}printf("e=%.5f\n",s);return 0;}Text 10 P188#include <stdio.h>int jc(int x){int i,s=1;for(i=1;i<=x;i++)s*=i;return s;}void main(){printf("(5!+8!)/3!=%d",(jc(5)+jc(8))/jc(3)); }Text 11:#include <stdio.h>int sushu(int n){int k;for (k=2;k<=n-1;k++)if (n%k==0) break;if (k==n) return 1;else return 0;}void main (){int num[10],jishu=0,oushu=0,ss=0,j;for (j=0;j<10;j++)scanf ("%d",&num[j]);for (j=0;j<10;j++){if (num[j]%2==1)jishu++;else oushu++;if (sushu(num[j])==1)ss++;}printf("奇数有%d个\n偶数有%d个\n素数有%d个\n",jishu,oushu,ss); }Text 12:#include <stdio.h>int max(int x[],int n){int i,m=x[0];for(i=1;i<n;i++)if(m<x[i])m=x[i];return m;}int main (){int i,j,ch[10];printf("输入10个整数:");for(i=0;i<10;i++)scanf("%d",&ch[i]);printf("max=%d\n",max(ch,10));return 0;}Text 13:#include <stdio.h>int min(int x[],int n){int i,m=x[0];for(i=1;i<n;i++)if(m>x[i])m=x[i];return m;}int main (){int i,j,ch[10];printf("输入10个整数:");for(i=0;i<10;i++)scanf("%d",&ch[i]);printf("min=%d\n",min(ch,10)); return 0;}Text 14:#include<stdio.h>int ch(int x){int i;for(i=2;i<x;i++)if(x%i==0) break;if(i==x)return(1);else return(0);}int main(){int n,i;scanf("%d",&n);for(i=1;i<=n/2;i++)if(ch(i)==1&&ch(n-i)==1)printf("n=%d (%d+%d)\n",n,i,n-i);return 0;}Text 15:#include <stdio.h>main(){int i,a[11],max,min,sum=0;float aver;for(i=1;i<=10;i++){printf("please input the %dth score:",i);scanf("%d",&a[i]);sum=sum+a[i];}max=a[1];min=a[1];for(i=2;i<=10;i++){if (max<a[i]) max=a[i];if (min>a[i]) min=a[i];}aver=(sum-max-min)/8;printf("The average:%f\n",aver);}Text 16:#include<stdio.h>void main(){int a=1,k,j;char ch='A';for(k=1;k<6;k++){for (j=1;j <=k;j++)printf("%c",ch);printf("\n");ch++;}}Text 17:#include<stdio.h>int main(){int i,j,k;char ch='D';for (i=0;i<=2;i++){for (j=0;j<i;j++)printf(" ");for (k=0;k<=6-2*i;k++)printf("%c",ch);printf("\n");ch--;}ch='A';for (i=0;i<=3;i++){for (j=0;j<=2-i;j++)printf(" ");for (k=0;k<=2*i;k++)printf("%c",ch);printf("\n");ch++;}return 0;}。