int fun(char a[], char b[]) {
    int len_a = strlen(a);
    int len_b = strlen(b);

    if (len_a > len_b) return 1;
    if (len_a < len_b) return -1;

    for (int i = 0; i < len_a; i++) {
        if (a[i] > b[i]) return 1;
        if (a[i] < b[i]) return -1;
    }

    return 0;
}