[编程入门]完数的判断-题解(C语言代码)

#include<stdio.h>
int main()
{int N,i,j,k;
int sum;
scanf("%d",&N);
for(i=1;i<=N;i++)
 {sum=0;
 for(j=1;j<=i/2;j++)
 {if(i%j==0)
 sum=sum+j;}
if(sum==i)
{
printf("%d its factors are ",i);
for(k=1;k<=i/2;k++)
if(i%k==0)
printf("%d ",k);
printf("\n");}
}return 0;
}

double a;多余
for(c=1;c<=n;c++)中c<=n/2即可