题解 | #竞选社长#

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

int main() {
    int countA = 0;
    int countB = 0;
    char str;
    //判断输入值是否为0
    while ((str = getchar()) != '0') {
        if (str == 'A')
            countA++;
        else    //if(str == 'B')
            countB++;
    }
    //打印结果
    if (countA > countB)
        printf("A\n");
    else if (countA < countB)
        printf("B\n");
    else
        printf("E\n");
    return 0;
}