#include "stdio.h"
int f(int n,int k){
int i,j,s,t;
for(s=0,i=1;i<=n;s+=t,i++)
for(t=j=1;j<=k;t*=i,j++);
return s;
}
int main(int argc,char *argv[]){
int n,k;
printf("Please neter n & k(int 0 if(scanf("%d%d",&n,&k)!=2 || n<1 || k<1){//输入数字不要太大,否则会溢出
printf("Input error, exit...\n");
return 0;
}
printf("The result is %d\n",f(n,k));
return 0;
}
运行样例：
