HDU 1092 A+B for Input-Output Practice (IV)

#include <cstdio>

int main()

{

  int n;

  while(scanf("%d",&n)!=EOF)

  if (n)

  {

    int x,ans;

    ans=0;

    for(int i=1; i<=n; i++) 

    {

      scanf("%d",&x);

      ans+=x;

    }

    printf("%d\n",ans);

  }

  return 0;

}