Function F_First_Program

Lab_20/Person.cpp:50–132

};

void F_First_Program()
{

	Person p; // creating an object of a class Person

	for (int k = 0; k < 1000; k++)
	{
		system("cls");
		cout << " C O N T A C T S\n"
			 << "------------------\n"
			 << " 1. Add a contact\n"
			 << " 2. Contacts\n"
			 << " 0. Back\n"
			 << " Your choice: \n";

		string name, tell_number; // contact info which will be inputted by user

		switch (_getch())
		{
		// case 49 is for adding a new contact into a list
		case 49:
		{
			system("cls");

			ofstream out_contacts("contacts", ios::binary | ios::app); // creating a file | binary file | append mode

			cout << " ADD TO CONTACT \n-----------------------------\n Enter a contact information.\n\n";
			cout << " Enter the name: ";
			cin >> name;
			cout << " Enter the phone number: ";
			cin >> tell_number;

			p.setData(name, tell_number); // setting inputted data

			// storing the data in file
			out_contacts.write((char *)&p, sizeof(Person));
			out_contacts.close(); // closing the file

			cout << "\n Successfully added!\n\n";

			system("pause");
		}
		break;

		// case 50 lists all Contacts
		case 50:
		{
			system("cls");

			ifstream in_contacts("contacts", ios::binary); // getting data from the file

			cout << " ALL CONTACTS\n---------------------------\n";
			cout << " Name            Phone\n---------------------------\n";

			while (in_contacts.read((char *)&p, sizeof(Person)))
			{
				// displaying the data
				p.displayData();