成绩转换

/*
    xuejineng2016@163.com
    2020年5月6日
*/
#include<stdio.h>
int main(void)
{
    int score;
    char grade;

    scanf("%d", &score);
    switch (score / 10)
    {
    case 10:
    case 9:grade = 'A'; break;
    case 8:grade = 'B'; break;
    case 7:grade = 'C'; break;
    case 6:grade = 'D'; break;
    default:grade = 'E';break;
    }

    printf("%c\n", grade);

    return 0;
}