# include <stdio.h>
int main()                                                            
{
    int n,i,s;
    for (n=2;n<=1000;n++)
    {
        s=0;
        for (i=1;i<n;i++)
        {
           if (n%i==0)[
           s=s+i;
            if (s==n)                                                                          附件]1[/附件]
           {
            printf ("%d是完全数，它的因子有：",n);
                for (i=1;i<n;i++)
            if (n%i==0)
            {
               printf ("%d ",i);
            }
                printf ("\n");
            }
        }
    }
        return 0;
}
输出结果为：

输出2到1000的完数嘛，没有问题啊，对的啊

红色部分也一起编译了？？

if (n%i==0)[
           s=s+i;
            if (s==n)                                                             附件]1[/附件]
          

if (n%i==0)[
           s=s+i;
            if (s==n)                                                             附件]1[/附件]

[ 本帖最后由 TAAAAB 于 2015-5-20 17:59 编辑 ]

输出结果中有个24不知怎么回事

# include <stdio.h>
int main(){
    int n,i,s;
    for (n=2;n<=1000;n++){
        s=0;
        for (i=1;i<n;i++){
           if (n%i==0)
           s=s+i;   
        }
        if(s==n){
            printf ("%d是完全数，它的因子有：",n);
            for (i=1;i<n;i++)if(n%i==0)printf ("%d ",i);
            printf ("\n");
        }
    }
        return 0;
}