#include<iostream.h>
int main()
{int a,b,sum;
a=2;
b=1;
sum=0;
   while(a<=1000)
   {
       while(b<a)
       {
           if(a%b==0)
           sum+=b;
           else
               goto;
           
           b++;
       }
       if(sum==a)
      cout<<a<<" ";
       else
           goto;
          a++;
   }
return 0;
}
这错在哪啊？

谢谢版主

谢谢wengbin的详细解答