编辑代码

#include <stdio.h>
int main () {
    int grade;
    int result;
    printf("请输入grade的值：");
    scanf("%d",&grade);
    result=grade/10;
    switch(result){
        case 10:
        case 9:
        printf("A");
        break;
        case 8: 
        printf("B");
        break;
        case 7:
        printf("C");
        break;
        case 6:
        printf("D");
        break;
        default:
        printf("E");
    }
    return 0;
}