统计字符出现次数c语言pta

以下是统计字符出现次数的C语言代码：

#include <stdio.h>
#include <string.h>

int main() {
    int m, i, j, number, max;
    char a[10000], b;
    scanf("%d", &m);
    getchar();
    while (m--) {
        a[10000] = {};
        scanf("%s", a);
        getchar();
        for (i = 0, max = 0, b = a[i]; a[i] != '\0'; i++) {
            for (j = 0, number = 1; a[j] != '\0'; j++)
                if (a[i] == a[j] && j != i)
                    number++;
            if ((number > max) + (number == max && a[i] < b) > 0) {
                b = a[i];
                max = number;
            }
        }
        printf("%c %d\n", b, max);
    }
    return 0;
}