#include<stdio.h>
int main()
{
  int n,i,sum;
    
  printf("Perfect numbers are: ");
  for(n=1;n<=100;n++)
   {
     i=1;
     sum = 0;
     while(i<n)
       {
         if(n%i==0)
            sum=sum+i;
            i++;
       }

     if(sum==n)
       printf("%d ",n);
   }

  return 0;
}

#include<stdio.h>
int main()
{
  int n,i,sum;
     i=1;
     sum = 0;
  printf("Perfect numbers are: ");
  for(n=1;n<=100;n++)
   {
          while(i<n)
       {
         if(n%i==0)
            sum=sum+i;
            i++;
       }

     if(sum==n)
       printf("%d ",n);
   }

  return 0;
}

这两段程序有什么区别