计算100以内能被3整除的自然数之和

Question

#include “stdio.h”
main()
{
int x=1,sum;
;
while(1)
{
if( ) break;
if( ) sum+=x;
x++;
}
printf(“sum=%d\n”,sum);
}

Answer 1

#include “stdio.h”
int main()
{
int x=1,sum = 0;
while(1)
{
  if( x>100) 
      break;
  if(x%3==0 ) 
      sum+=x;
   x++;
}
printf(“sum=%d\n”,sum);
}