题解 | #比较字符串大小#

#include <iostream>
using namespace std;

int mystrcmp(const char* src, const char* dst);

int main() {

    char s1[100] = { 0 };
    char s2[100] = { 0 };

    cin.getline(s1, sizeof(s1));
    cin.getline(s2, sizeof(s2));

    int ret = mystrcmp(s1, s2);

    cout << ret << endl;

    return 0;
}

int mystrcmp(const char* src, const char* dst) {

    // write your code here......
    int i {0};
    while (true) {
        if (*(src+i) == '\0' and *(dst+i) != '\0') {
            return -1;
        } else if (*(src+i) != '\0' and *(dst+i) == '\0') {
            return 1;
        } else if (*(src+i) == '\0' and *(dst+i) == '\0') {
            return 0;
        }

        if (*(src+i) > *(dst+i)) {
            return 1;
        } else if (*(src+i) < *(dst+i)) {
            return -1;
        }

        i++;
    }

}