#include <stdio.h>
int main(){
char cGrade;
printf("please enter your grade\n");
scanf("%c",&cGrade);
printf("Grade is about:");
switch(cGrade){
case 'A':
printf("90~100\n");
break;
case 'B':
printf("80~89\n");
break;
case 'C':
printf("70~79\n");
break;
case 'D':
printf("60~69\n");
break;
case 'F':
printf("<60\n");
break;
default:
printf("you enter the char is wrong!\n");
break;
}
return 0;
}
