运行不了这是什么意思

Question

为什么它不让我运行？

#include<stdio.h>
int main(void)
{
 int i;
 long sum=0;

  do{
  scanf("%d",&i);
  getchar();
  if(i<=0)
  break;
  sum = sum + i;
  }while();

printf("%d",sum);


 return 0;
}

显示错误
Build file: "no target" in "no project" (compiler: unknown)
.c||In function 'main':|
|13|error: expected expression before ')' token|
Build failed: 1 error(s), 0 warning(s) (0 minute(s), 0 second(s))

Answer 1

while循环的条件呢