c语言求分数等级的问题

Question

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看了没有什么思路一直打错求解呀

Answer 1

供参考：

#include<stdio.h>
#define M 10001
const char rank[7] = "XEDCBA";
int main()
{
    int N, i, cnt, ret;
    float x[M] = { 0 };
    scanf("%d", &N);
    for (i = 0; i < N; i++)
        scanf("%f", &x[i]);
    for (i = 0, cnt = 0; i < N; i++)
    {
        ret = (1 * (x[i] >= 0  && x[i] < 60)  +
               2 * (x[i] >= 60 && x[i] < 70)  +
               3 * (x[i] >= 70 && x[i] < 80)  +
               4 * (x[i] >= 80 && x[i] < 90)  +
               5 * (x[i] >= 90 && x[i] <= 100));
        if (ret == 0) cnt++;
        printf("%c\n", rank[ret]);
    }
    printf("%d", cnt);
    return 0;
}