#include <iostream> // library that contains basic input output functions
#include <string> // library for c++ strings

using namespace std;

int main()
{
    //Username and Password to validate credentials
    const string USERNAME = "ali";
    const string USERNAME2 = "Shahab";
    const string PASSWORD2 = "14567";
    const string PASSWORD = "564";
    string username, password;

    cout << "Enter Username : ";
    cin >> username;

    cout << "Enter Password : ";
    cin >> password;

            //Checking if user's entered credentials are equal to actual USERNAME and PASSWORD
            if (username == USERNAME && password == PASSWORD)
            {
                cout << "User credentials are correct!!!" << endl;
                cin.get();
            }
            else
            {
                if (username == USERNAME2 && password == PASSWORD2)
                {
                    cout << "User credentials are correct!!!" << endl;
                    cin.get();
                }
                else
                {
                    cout << "Invalid login details" << endl;
                    cin.get();
                }
            }
            cin.get();
    return 0;
}