C++注册与登陆

这是C++实现的第一个简单小项目

实现账号的注册与登陆，同时将账号的信息（包括密码）保存成txt文件。

#include 
#include 
#include 

using namespace std;

bool IsLoggedIn(){
    string username, password, un, pw;
    cout << "Enter username: "; cin >> username;
    cout << "Enter password: "; cin >> password;

    ifstream read("data\" + username + ".txt");
    getline(read, un);
    getline(read, pw);

    if(un == username && pw == password){
        return true;
    }
    else return false;
}

int main(){
    int choice;

    cout << "1: Registern2: LoginnYour choice: "; cin >> choice;
    if(choice == 1){
        string username, password;

        cout << "select a username: " ; cin >> username;
        cout << "select a password: " ; cin >> password;

        ofstream file;
        file.open("data\" + username + ".txt");

        file << username << endl << password;
        file.close();

        main();
    }
    else if(choice == 2){
        bool status = IsLoggedIn();

        if(!status){
            cout << "False Login!" << endl;
            system("PAUSE");
            return 0;     
        }
        else{
            cout << "Succesfully Logined in!" << endl;
            system("PAUSE");
            return 1;
        }
    }
}