题解 | #小乐乐转换成绩#

#include <stdio.h>
int main()
{
    int score;
    while (scanf("%d", &score)!=EOF)
    {
        if (score >= 0&& score <=100)
        {
            score /= 10;
            switch (score)
            {
            case 10:printf("A\n"); break;
            case 9: printf("A\n"); break;
            case 8: printf("B\n"); break;
            case 7: printf("C\n"); break;
            case 6: printf("D\n"); break;
                case 5:
                case 4:
                case 3:
                case 2:
                case 1:
                case 0:
                printf("E\n");break;
                default:
                break;
            }
             }
             else
              {
             printf("F\n");
             }
    }
    return 0;

}