编辑代码

#include <stdio.h>
int main()
{
	char grade;
	scanf("%c",&grade);
	printf("Your score:");
	switch(grade)
	{
	case 'A': printf("91～100\n");break;
	case 'B': printf("81～90\n");break;
	case 'C': printf("71～80\n");break;
	case 'D': printf("61~70\n");break;  
	case 'E': printf("<60\n");break;  
	default:  printf("enter data error!\n");
	}
	return 0;
}