#include <iostream>
#include <string>

class Book
{
public:
    std::string name;
    std::string mobile_number;

public:
    Book()
    {
        name = "";
        mobile_number = "";
    }

    bool add(std::string pName, std::string pMobile_number)
    {
        if (name == "")
        {
            name = pName;
            mobile_number = pMobile_number;
            return 1;
        }
        else
            return 0;
    };
};


int main()
{
    std::string temp_name;
    std::string temp_mobile;
    Book person[2];
    bool condition = true;
    int choice;
    bool added = false;

    while (condition == true)
    {
        std::cout << "****************************" << std::endl;
        std::cout << "1. Add contact" << std::endl;
        std::cout << "2. Show contacts" << std::endl;
        std::cout << "3. Exit program" << std::endl;
        std::cout << "Enter your choice and press enter: ";

        std::cin >> choice;

        switch (choice)
        {
        case 1:
            std::cout << "Give contact name: " << std::endl;
            std::cin >> temp_name;
            std::cout << "Give the mobile number: " << std::endl;
            std::cin >> temp_mobile;

            for (int i = 0; i < 2; i++) {

                if (person[i].add(temp_name, temp_mobile))
                {
                    std::cout << "Contact added successfully" << std::endl;
                    added = true;
                    break;
                }
            }
                if (added == false)
                {
                    std::cout << "Memory full! Delete some contacts first" << std::endl;
                    break;
                }
            break;

        case 2:
            for (int i = 0; i < 2; i++)
            {
                std::cout << "Name: " << person[i].name << " - " << "Mobile number: " << person[i].mobile_number << std::endl;
            }
            break;

        case 3:
            std::cout << "Ending program." << std::endl;
            condition = false;
            break;
        }
    }
}