C程序填空改错及答案

1、结果：75#include "stdio.h"fun( int m, int xx[] ){int i,j,k=0;xx[k++]=1;for( i=2; i<=m; i++)for( j=2; j<i; j++)if( _____________) // i%j==0 {xx[k++]=i;break;}_____________; //return k}main(){int zz[100];printf("%d\n",fun(100,zz));}2、结果：8.640500#include <stdio.h>#include <math.h>double fun(int n){/*下行有错*/int s=0; int i; //double s=0.0; int i; for(i=1;i<=n;i++)s+=log(1.0*i);s=sqrt(s);/*下行有错*/return ; //return s;}main(){printf("%lf\n",fun(30));}#include <stdio.h>void main(){int i,n=0;for(i=10006;i<=99996;i++)if(i%10==6 && i%3==0)n++;printf("%d\n",n);}/*求1到1000之内能被7或11整除、但不能同时被7和11整除的整数个数。

请编写程序。

*/#include <stdio.h>void main(){int i,n=0;for(i=1;i<=1000;i++)if((i%7==0||i%11==0)&&(!(i%7==0&&i%11==0))){n=n+1;}printf("%d\n",n);}#include<stdio.h>int fun(int m){int i,k;for(i=m+1;;i++){for(k=2;k<i;k++)/*下行有错*/if(i%k!=0) break; //if(i%k==0) break; if(k==i)/*下行有错*/return k; //return i;}}main(){int n;scanf("%d",&n);printf("%d\n",fun(n));}6、结果：5#include <stdio.h>#include <math.h>main(){int a,b,sum,count=0,i;/*下行有错 */for (a=1; a<=700; a--) // for (a=1; a<=700; a++) {sum=0;for(b=1;b<=a;b++){if(a%b==0)sum=sum+a/b;}for(i=2;i<=9;i++)if(sum==a*i)/*下行有错 */count+=i; //count+=1;}printf("%d\n",count);}7、结果：495.00#include<stdio.h>float fun(int m, int n){int i;double p=1.0;for(i=1;i<=m;i++) p=p*i;for(i=1;i<=n;i++)__________ //p=p/i; for(i=1;i<=m-n;i++) p=p/i;__________ //return p;}main(){ printf("%.2f\n",fun(12,8));}#include<stdio.h>main(){int p,q,r,s,n=0;for(p=1;p<=100;p++)for(q=p;q<=100;q++)for(r=q;r<=100;r++)for(s=r;s<=100;s++)if(1.0/p+1.0/q+1.0/r+1.0/s==1) n++;printf("%d",n);}#include<stdio.h>/*下行有错*/IsPrime(integer n) // int IsPrime(int n) { int i,m;m=1;for(i=2;i<n;i++)/*下行有错*/if(n%i) // if(n%i==0){m=0;break;}return(m);}main( ){ int j,k=2310,sum=0;for(j=2;j<=k;j++)if((!(k%j))&&(IsPrime(j)))sum+=j;printf("%d\n",sum);}#include<stdio.h>main(){int i,t=1,s=0;for(i=1;i<=101;i+=2){s=s+t*i;__________ // t=t*(-1); }printf("%d\n",s);}#include "stdio.h"int fun(int a,int b){int i,count=0,low,high;for ( i=a;i<=b;i++ ){low=i%10;high=i/100;if( _____________ ) // if(low==high )count++;}return count;}main(){printf("%d\n",_____________ ); //fun(300,900) }#include<stdio.h>void main(){int num,a,b,c,count=0;/*下行有错*/while(num=101;num<1000;num++) // for(num=101;num<1000;num++) {a=num/100;b=num%100/10;c=num%10;/*下行有错*/if(num+c*100+b*10+a=1333) // if(num+c*100+b*10+a==1333) count++;}printf("%d\n",count);}13、结果：23.197745#include<stdio.h>#include<math.h>double fun(int n){ double sum,s0,s1,s2,s;int k;sum=1.0;if(n<=2)sum=0.0;s0=0.0; s1=0.0; s2=1.0;for(k=4;k<=n;k++){ s=s0+s1+s2;sum+=__________;// sum+=sqrt(s); s0=s1;s1=s2;s2=s;}__________ //return sum;}main(){ printf("%f\n",fun(10));}#include<stdio.h>#include<math.h>main(){ int i,ge,shi,bai,n=0;for(i=1;i<1000;i++){ ge=i%10;shi=i/10%10;bai=i/100;if(i==pow(ge,3)+pow(shi,3)+pow(bai,3)) n++;}printf("%d\n",n);}#include<stdio.h>int fun(int a,int b){ int r,t;if(a<b){ t=a; a=b; b=t;}r=a%b;while(r!=0){ a=b;b=r;/*下行有错*/r=a/b; // r=a%b;}/*下行有错*/return a; // return b; }main(){ int a;a=fun(780,208);printf("%d\n",a);}#include<stdio.h>long fun(int g){switch(g){case 0: return 0;case 1: return 1;case 2: return 1;}return( __________);// return( fun(g-1)+fun(g-2)); }main(){long fib;int n=25;fib=__________ ;//fun(n);printf("%ld\n",fib);}#include<stdio.h>/*下行有错*/void IsPrime(int n) // int IsPrime(int n) { int i,m;m=1;for(i=2;i<n;i++)if(!(n%i)){ m=0;/*下行有错*/continue; //break;}return(m);}main( ){ int j,k=2310,sum=1;for(j=2;j<=k;j++)if((!(k%j))&&(IsPrime(j)))sum*=j;printf("%d\n",sum);}#include<stdio.h>double fun(int n){double s=1.0;int i;for(i=1;__________ ;i++) //i<=n s=s-1.0/(i*(i+1));__________ //return s;}main(){printf("%.4f\n",fun(7));}#include<stdio.h>age( int n ){ int c;if( n==1 ) c=10;else __________ //c=age(n-1)+2;return(c);}main(){ int n=10;printf("%d\n", __________ ); // age(n) }21、结果: 5118372#include <stdio.h>#include <math.h>main(){ long sum;int i;sum=0;for (i=5;i<=80;i++){/*下行有错*/if (fmod(i,2)==0) // if (fmod(i,2)==1) sum+=i*i*i;}printf("%ld\n",sum);}#include <stdio.h>main(){ int i,a,b,c,d,n=0;for (i=1000;i<=9999;i++){d=i%10;c=i/10%10;b=i/100%10;a=i/1000;if(a*a+b*b+c*c+d*d==100)n++;}printf("%d\n",n);}#include<stdio.h>int mcf(int a,int b){ int temp;while(b){__________a=b;b=temp;}return a;}main(){printf("%d\n",__________ ); // mcf(234,338) }#include <stdio.h>#include <math.h>int prime(int n){ int yes, i;if(n<=1) {return 0;}yes=1;for(i=2; i<=sqrt(n); i++) /*下行有错*/if(n%i!=0) //if(n%i==0) { yes=0; break;}return yes;}main(){int sum=0, i;for(i=2;i<500; i++)if(prime(i))/*下行有错*/sum+=1; //sum+=i;printf("%d\n", sum);}#include <stdio.h>main(){ int i,a,b,c,n=0;for (i=101;i<=999;i+=2){c=i%10;b=i/10%10;a=i/100;if((a+b+c)%12==0)n++;}printf("%d\n",n);}#include<stdio.h> main(){int i,s=1;for(i=9;i>=1;i--) s=2*(s+1) ; printf("%d",s);}#include <stdio.h>#include <math.h>int su(int x){int j,k;k=sqrt(x) ;for(j=2;j<=k;j++){if (x%j==0) break;}if (x>1&&j>k) return (1);else return (0);}void main(){ long sum=0;int a,i,j;for (a=11;a<=99;a++){ i=a%10;j=a/10;if (su(a)&&su(i*10+j)){sum=sum+a;printf("%5d",a);} }printf("\n %ld",sum);}#include <conio.h>#include <stdio.h>#include <math.h>main(){ long s;long k,n,sum=0,count=0;for (n=2;n<=750;n++){ if (n<10) k=10;else if (n<100) k=100;else k=1000;s=n*n;if (s%k==n) {count++;sum+=n;printf("%4d",n);} }printf("\n%5ld,%5ld",count,sum);}27下面的程序中，函数fun的功能是：根据形参m，计算下面公式的值。