求助大佬们，我自测没问题啊，除了各种各样的数据，负数也出了，可是却爆zero

#include <cstdio>
#include <cmath>
#include <algorithm>

using namespace std;

int a[4], c[4];
char b[4];

int main() {
    for (int i = 1; i <= 3; i ++ ) scanf("%d", &a[i]);
    sort(a + 1, a + 4);
    getchar();
    scanf("%c%c%c", &b[0], &b[1], &b[2]);
    for (int i = 0; i < 3; i ++ ) {
        if (b[i] == 'A') c[i + 1] = a[1];
        else if (b[i] == 'B') c[i + 1] = a[2];
        else if (b[i] == 'C') c[i + 1] = a[3];
    }
    for (int i = 1; i <= 3; i ++ ) printf("%d ", c[i]);
    printf("\n");
    return 0;
}

请发私信告诉我