知识点:

复合类型:

字符/字符数组

#include <iostream>
using namespace std;

int main() {
    string user;
    string password;

    while (cin >> user >> password) {
        if ((user == "admin") && (password == "admin")) {
            cout << "Login Success!";
        } else {
            cout << "Login Fail!";
        }
    }

    return 0;
}