错的不会改，纠正一下吧！😊

#include <stdio.h>

int main(){
  int sum = 0,count = 0, n;
  printf("请输入整数：");
  scanf("%d", &n);

  do{

    sum = sum + n;
    count ++;
    n --;
  }while(n > 0);

  printf("sum:%d;count:%d\n", sum, count);
  return 0;
}

while()后面应该有;