福建省计算机二级C语言上机题解析

第一部分：程序修改题#include<math.h>#include<stdio.h>#include<string.h>#include<conio.h>voidmain(){charstr1[100],t[200];inti,j;/**/i=0;/**/ 改成j=0;clrscr();{{j++;}}t[j]='\0';}inti,j;j=0;{/**/if((i<10)&&(i%3==0))/**/ 改成i>10 {/**/y+=1/i;/**/ 改成y+=1.0/i;j++;}if(j==n)break;}returny;}voidmain(){clrscr();printf("fun(8)=%8.3lf\n",fun(8));}#include<stdio.h>voidmain(){/**/inti,j;/**/ 改成inti,j,k;for(i=1;i<=6;i++){for(k=1;k<=10+i;k++)printf("");}getch();}/**/clrscr();/**/{n++;}}returnn;}{intnum;printf("\nThereare%dsolutions.\n",num); getch();}#include<stdio.h>#include<conio.h>voidmain(){intm,n,result,flag=0;/**/charch,/**/基本语法错误，逗号改成分号clrscr();scanf("%d%c%d",&m,&ch,&n);/**/switchch/**/基本格式错误，改成switch(ch){case'+':result=m+n;break;case'-':result=m-n;break;case'*':result=m*n;break;case'%':result=m%n;break;case'/':result=m/n;break;default:{printf("Error!\n");flag=1;}}if(!flag)printf("%d%c%d=%d\n",m,ch,n,result);getch();}{inti,j=0;{{{break;}}j++;}getch();}#include<stdio.h>#include<string.h>main(){charstr1[128];/**/inti,len;sum=0;/**/基本语法错误，改成inti,len,sum=0; printf("\nPleaseinputthestring:");gets(str1);{/**/if(str1[i]>='0'||str1[i]<='9')/**/逻辑错误，||改成&& sum++;}printf("%d\n",sum);getch();}#include<stdio.h>#include<math.h>#defineM8main()getch();}main(){/**/{/**/}printf("%d\n",sum);getch();}#include<stdio.h>#include<math.h>/**/#includeM5/**/宏定义错误，改成#defineM5 main(){inta[M],i;scanf("%d",&a[i]);printf("Evennumbers:\n");for(i=0;i<M;i++)/**/if(a[i]/2==0)/**/判断偶数应该改成a[i]%2==0printf("%d",a[i]);printf("\n");getch();}#include<stdio.h>#include<string.h>{chars1[30]="People'sRepublicof",s2[]="China";char*ps1,*ps2;/**/ps1=NULL;/**/指针ps1指向字符串s1，改成ps1=s1;ps2=s2;/**/while(*ps1==NULL)/**/判断是否到达串尾标识，应改成*ps1!='\0' ps1++;while(*ps2)*(ps1++)=*(ps2++);getch();}#include<stdio.h>#include<math.h>voidmain(){floata[3],s,area;inti;printf("Pleaseinput3numbers:\n");for(i=0;i<3;i++)scanf("%f",/**/a[i]/**/);输入列表项必须指定地址}#include<stdio.h>voidmain(){inti;/**/for(i=100;i<200;i++);/**/for语句错误，此处去掉分号if((i-2)%4==0)if(!((i-3)%7))if(i%9==5)printf("%d\n",/**/&i/**/);去掉地址符号&getch();}/**/{inttemp;/**/}{inta,b;getch();}{intb,i;/**//**/{a+=i;b=i+1;c+=b;}printf("totalofevennumbers:%d\n",a);printf("totalofoddnumbers:%d\n",c-101);getch();}voidmain(){intx,y,z,i,result=520;for(x=1;x<10;x++)for(y=1;y<10;y++)/**/for(z=1;z<10;z++)/**/z初值应为0，改成for(z=0;z<10;z++) {i=100*x+10*y+z+100*y+10*z+z;/**/if(i=result)/**/逻辑关系等于应该为i==resultprintf("x=%d,y=%d,z=%d\n",x,y,z);}getch();}{/**/ints;getch();}{{/**//**/printf("%d",n);}printf("\n");getch();}第二部分：程序填空题#include<stdio.h>voidmain(){/**/long/**/p;p=1;/**/for/**/(i=1;i<=8;i++)p=p*i;printf("\np=%ld",p);getch();}#include<stdio.h>voidmain(){inta,b,c;floatf;clrscr();f=/**/c=/**/getch();}{int*q;if(/**/}{printf("max=%d,num=%d\n",max,min); }#include<stdio.h>voidmain(){inta,b,k;intplu=/**/403/**/;for(a=1;a<10;a++)for(b=1;b<10;b++)k=(a*10+b)*/**/(b*10+a)/**/;if(k==plu)printf("A=%d,B=%d\n",a,b); }}#include<stdio.h>voidmain(){intn,a,b;/**/a=0;b=0;/**/{else/**/}}}clrscr();dofor(a=2;a<=num/2+1;a++)if(prime(a)&&prime(/**/num-a/**/)) printf("\n%d=%d+%d",num,a,num-a); }#include<stdio.h>#include<math.h>/**/main()/**/{floatx,x0,f,f1;x=1.5;f=((2*x0-4)*x0+3)*x0-6;f1=(6*x0-8)*x0+3;x=x0-f/f1;}/**/while/**/(fabs(x-x0)>=1e-6); printf("therootis:%.2f\n",x);}#include<stdio.h>main(){/**/char/**/str[20];inti;floatx;i=0;{str[i]=/**/i++;}getch();}main(){floatm;/**/getch();}{intk;floatavg=0.0;for(k=0;k<n;k++)avg=avg+/**/pa[k]/**/;avg=avg/n;returnavg;}#include<stdio.h>main(){/**/char/**/s[80];printf("Pleaseinputastring:");for(i=0;(s[i]=getchar())!='\n';i++); s[i]='\0';for(i=0;s[i]!='\0';i++){if(s[i]>='a'&&s[i]<='z')s[i]=s[i]-32;/**/elseif/**/(s[i]>='A'&&s[i]<='Z') s[i]=s[i]+32;printf("%c",s[i]);}getch();}{{if/**/{t=a[j];a[j+1]=t;}}}}{inti,k=sizeof(a)/sizeof(int);sort(a,k);for(i=0;i<k;i++)printf("%d",a[i]);printf("\n");getch();}#include<stdio.h>#include<math.h>intfun(/**/floata,floatb,floatc/**/)floattemp;intbTrue=0;if(a<b){temp=a;a=b;b=temp;}if(a<c){temp=a;a=c;c=temp;}}main(){elsegetch();}main(){intx;getch();}#include<stdio.h>#include<math.h> voidsort(inta[],intm) {inti,j,k,t;for(i=0;i<m-1;i++){k=i;for(j=i+1;j</**/m/**/;j++) if(a[j]<a[k])/**/k=j/**/;if(k!=i){t=a[k];a[k]=a[i];a[i]=/**/t/**/;}}}voidmain(){inta[]={72,25,58,32,2,15,7,64}; inti,m=sizeof(a)/sizeof(int);sort(a,m);for(i=0;i<m;i++)getch();}main(){/**/getch();}{m=/**/}main(){inti,/**/j/**/;inta[4][4],sum;sum=/**/0/**/;printf("Pleaseinput16numbers:\n"); for(i=0;i<4;i++)for(j=0;j<4;j++)scanf("%d",&a[i][j]);for(i=0;i<4;i++)/**/sum+=a[i][0];/**/printf("%d\n",sum);getch();#include<stdio.h>intfun(inta[],intn,/**/intq/**/){intleft,right,mid;left=0;right=n-1;{mid=/**/}}main()intk,n;getch();}{intbIn;bIn=/**/}main(){floatr=-1,x,y;intbIn;while(r<0){printf("Pleaseinputradiusr(r>0):\n"); scanf("%f",&r);}printf("Pleaseinputthedot(x,y):\n"); scanf("%f%f",&x,&y);bIn=fun(r,x,y);if(bIn==1)printf("inthecircle!\n");elseprintf("outoftheCircle!\n"); getch();}#include<stdio.h>/**/#include<math.h>/**/ doublefun(doublex){/**/returnx*x-2*x+6;/**/}{clrscr();getch();}{/**//**/p=p/i;returnp;}voidmain(){clrscr();printf("p=%f\n",fun(13,7)); getch();}#include<stdio.h> intfindmax(int*array,intsize); voidmain(){inta[]={33,91,23,45,56,-12,32,12,5,90}; clrscr();printf("Themaxis%d\n",/**/findmax(a,10)/**/); getch();}intfindmax(int*array,intsize){inti,/**/max=*array/**/;for(i=1;i<size;i++)if(array[i]>max)max=array[i];}{sum+=i;/**/}{intm;clrscr();}getch();}voidmain(){inti,j;charstr[]="1234567",/**/k/**/;for(i=0,/**/j=strlen(str)-1/**/;i<j;i++,j--){k=str[i];str[i]=str[j];str[j]=k;}clrscr();printf("%s\n",str);getch();}#include<stdio.h>#include<string.h>typedefstruct{intnum;charname[20],sex[2];intage,score;}STU;};{/**/{flag=0;if(/**/{flag+=1;}if(/**/}}{inti,size=sizeof(mystudent)/sizeof(STU);clrscr();printf("Students\'informationbeforesort:\n\n");printf("NumberNameageSexscore\n\n");for(i=0;i<size;i++)printf("%-7d%s%10d\t%s%8d\n",(mystudent+i)->num, (mystudent+i)->name,(mystudent+i)->age, (mystudent+i)->sex,(mystudent+i)->score);sort(mystudent,size);printf("\nStudents\'informationaftersort:\n\n");printf("NumberNameageSexscore\n\n");for(i=0;i<size;i++)printf("%-7d%s%5d\t%s%7d\n",(mystudent+i)->num, (mystudent+i)->name,(mystudent+i)->age, (mystudent+i)->sex,(mystudent+i)->score);getch();}#include"stdio.h"#defineROW3#defineCOL3voidmain(){clrscr();/**/{if(/**//**/}getch();}{for(i=1;i<=N;i++){t=/**/t*10+i/**/;s+=t;}clrscr();printf("\ns=%d\n",s);getch();}#include<stdio.h>longfib(intn);voidmain(){intk;clrscr();printf("Thefirst15dataofFibonacciis:\n\n"); for(k=1;k<=15;k++)printf("%d",fib(k));printf("\n");getch();}{/**/else}main(){{};/**/inti=0;{i++;}getch();}#include<stdio.h>main(){inti,a[10]={9,26,35,8,6,19,69,3,5,95}; intmin1,min2;i=0;min1=a[0]<a[1]?a[0]:a[1];min2=a[0]>a[1]?/**/a[0]:a[1];/**/for(i=2;i<10;i++){if(a[i]<min1){min2=min1;min1=a[i];}elseif(a[i]<min2)/**/min2=a[i];/**/}printf("min1=%d,min2=%d\n",min1,min2); getch();}main(){/**/getch();}{x1=/**/elsey=x1;}#include<stdio.h>doublefun1(doublex){/**/return(1+sin(x)+exp(x))/(1+x);/**/}voidmain(){clrscr();printf("fun1(3.00)=%8.3lf\n",fun1(3.00)); printf("fun1(3.76)=%8.3lf\n",fun1(3.76)); }#include<string.h>#include<conio.h>#include<math.h>#include<stdio.h>intfun2(inta[],intn,intb[],intc[]){/**/inti,j,t,k=0;{t=c[j];}/**/}clrscr();for(i=0;i<nb;i++)printf("%6d",bb[i]);printf("\n");printf("Elementsinccare:");for(i=0;i<nb;i++)printf("%6d",cc[i]);printf("\n");printf("Thereare%2delementsinbb.\n",nb); }#include<math.h>#include<stdio.h>{/**/return(exp(x)+fabs(x-6))/(x+1.3);/**/}voidmain(){clrscr();printf("fun1(0.76)=%8.3lf\n",fun1(0.76)); printf("fun1(3.00)=%8.3lf\n",fun1(3.00)); printf("fun1(3.76)=%8.3lf\n",fun1(3.76)); }{/**//**/}clrscr();getch();}{/**/if(x<5)returnexp(x)+0.9;elseif(x==5)return12.5;elsereturn(sin(x)-7.8)/(2*x);/**/}voidmain(){floatx;doubley;printf("Pleaseinputanumber:\n"); scanf("%f",&x);y=fun1(x);printf("fun1(%.2f)=%.2f\n",x,y); getch();}#include<stdio.h>#include<math.h>voidmain(){intfun();intnum;getch();}intfun(){/**/{}/**/}{/**/elsereturn0;/**/}voidmain(){floatx;doubley;printf("Pleaseinputanumber:\n"); scanf("%f",&x);printf("f(%.3f)=%.3f\n",x,y); getch();}#include<stdio.h>#include<math.h>voidfun(inta[],intm){/**/inti;a[0]=a[1]=1;for(i=2;i<m;i++)/**/}{getch();}{/**//**/}{floatx;printf("Pleaseinputanumber:\n"); scanf("%f",&x);y=f(x);printf("f(%0.2f)=%0.2f\n",x,y); getch();}#include<stdio.h>#include<math.h>intfun(inta[][3],intm)inti,j,flag=1;for(i=0;i<m;i++)for(j=0;j<m;j++)if(a[i][j]!=a[j][i]){flag=0;break;}if(flag)return1; elsereturn0;/**/}voidmain(){intb;if(b==1)elsegetch();}{/**//**/}voidmain(){floatx;doubley;clrscr();printf("Pleaseinputx:\n"); scanf("%f",&x);y=f(x);printf("f(%.2f)=%.2f\n",x,y);#include<stdio.h>#include<math.h>charfun(floatf){/**/floatc;c=5.0/9*(f-32);if(c<0)return'W';elseif(c<25)return'B';elseif(c<35)return'O';/**/}{floatf;getch();}{/**/floaty;/**/}voidmain(){floatx;doubley;clrscr();printf("Pleaseinputanumber:\n"); scanf("%f",&x);y=f(x);#include<stdio.h>#defineROW4#defineCOL4intfun(inta[][COL],introw,intb[]) {/**/inti,j,k=0;intsum=0;for(i=0;i<row;i++)}/**/}{clrscr();getch();}{/**//**/}voidmain(){floatx;doubley;printf("Pleaseinputanumber:\n"); scanf("%f",&x);y=f(x);#include<string.h>#include<stdio.h>voidf(charp[][20],intn);voidmain(){inti;charp[][20]={"abc","xabdfg","abbd","dcdbe","cd"}; f(p,5);clrscr();getch();}{/**/inti,j;{}/**/}{/**/x1=(-b+sqrt(b*b-4*a*c))/(2*a);x2=(-b-sqrt(b*b-4*a*c))/(2*a);if(x1>x2)returnx1;elsereturnx2;/**/}voidmain(){floatx;#include<stdio.h>intstrcmp1(constchar*str1,constchar*str2){/**/while(*str1++&&*str2++){if(*str1>*str2)return1;if(*str1<*str2)return-1;}return0;/**/}{intcom;clrscr();getch();}{/**//**/}main(){intn;doublea[2],x;printf("\nPleaseenterx,n:");scanf("%lf,%d",&x,&n);while(x<1.0||x>2.0||n<0||n>10){printf("\nInvaliddata(1.0<=x<=2.0,0<n<=10)\n\nPleaseenterx,n:");}fun(a,x,n);printf("\nResult:a[0]=%f,a[1]=%f",a[0],a[1]); getch();}#defineN6#defineM9voidfun(inta[],intb[],intc[]){/**/inti,j,k;/**/}main(){getch();}精心整理。