hdu2004 成绩转换

//水题

http://acm.hdu.edu.cn/showproblem.php?pid=2004
#include <stdio.h>
int main()
{
 int n;
 while(~scanf("%d",&n))
 {
  if(n<0) printf("Score is error!\n");
  else if(n>=0&&n<60) printf("E\n");
  else if(n<70) printf("D\n");
  else if(n<80) printf("C\n");
  else if(n<90) printf("B\n");
  else if(n<=100) printf("A\n");
  else printf("Score is error!\n");
 }
 return 0;
}