习题3-38

#include<stdio.h>  /*求从1的k次方到n的k次方的和*/int powers(int m,int n)  {   int i,sum=1;   for (i=0;i<n;i++)   {    sum*=m;   }   return sum;  }  int sum_of_powers(int k,int n)  {   int i,sum=0;   for(i=1;i<=n;i++)   sum+=powers(i,k);   return sum;  }  int main()  {   int a,b;   while(1)   {  printf("输入指数k和项数n："); scanf("%d%d",&a,&b);   printf("sum of %d powers of intergers from 1 to %d =%d\n",a,b,sum_of_powers(a,b));   }   return 0;  }