Method input

Lab_21/city_temperature_control.cpp:26–31

inputing the data for ID and name

public:
	// inputing the data for ID and name
	void input() {
		cout << "Enter ID of the city: ";
		cin >> cityID;
		cout << "Enter Name of the city: ";
		cin >> cityName;
	}

	int getCityID() { 
		return cityID;