#include<stdio.h>
int main()
{
char a;
printf("输入五级制成绩:
");
scanf("%ch",&a);
switch(a)
{
case'A':printf("90~100
");break;
case'B':printf("80~89
");break;
case'C':printf("70~79
");break;
case'D':printf("60~69
");break;
case'E':printf("0~59
");break;
default:printf("error
");
}
return 0;
}