C语言编程答案实验七.doc

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1、试验七 编号1#include stdio.hint func(int a,int b)return(a+b);void main()int x=20,y=11,z;z=func(x,x+y),+y);printf(x=%d,y=%d,z=%d,x,y,z);实验七 编号2#include void main()int x=10,y=15,z=30;void fun(int a,int b,int c);fun(x,y,z);printf(x=%d,y=%d,z=%d,x,y,z);void fun(int a,int b,int c)c=a+b;实验七 编号3#include int fac

2、(int n)int i,f=1;for(i=1;i=n;i+)f=f*i;return f;void main()int i,add=0;for(i=1;i=11;i+)add=add+fac(i);printf(1!+2!+.+11!=%d,add);实验七 编号4#includevoid main()int n;float x;double s;double pow(float x,int n);printf(please input x and n:);scanf(%f,%d,&x,&n);s=pow(x,n);printf(s=%lfn,s);double pow(float x,i

3、nt n)int i;double f=1;for(i=1;i=n;i+)f=f*x; return f;实验七 编号5#include#define K 2void main()int count,in;int countdigit(int number,int digit);scanf(%d,&in);count=countdigit(in,K);printf(count=%dn,count);int countdigit(int number,int digit)int x,count=0;while(number0)x=number%10; number/=10;if(x=digit)

4、count+;return(count);实验七 编号6#includevoid main()int i,n,a,sn=0;int fn(int a,int n);scanf(%d%d,&a,&n);for(i=1;i=n;i+)sn+=fn(a,i);printf(sn=%dn,sn);int fn(int a,int n) int s=0,i; for(i=1;i=n;i+) s=s*10+a; return s;实验七 编号7#includeint sum(int n) int m,sum=0; while(n) m=n%10; n=n/10; sum+=m; return(sum);main()int i;for(i=2010;i=2020;i+)printf(%dn,sum(i);实验七 编号8#includemain()int prime();int m,i;scanf(%d,&m);for(i=m-1;i2;i-)if(prime(i)!=0)printf(%d,i);break;int prime(int n)int i;for(i=2;i*in;i+)if(n%i=0)return 0;return 1;