class Araba {
private:
	string marka, model="";
	int yil;
public:
	Araba(string m = "Opel", string mod = "Astra", int yy = 2008)
	{
		marka = m; model = mod; yil = yy;
	}
	Araba(string m, int yy)
	{
		marka = m; yil = yy;
	}
	void Goster()
	{
		if(model!="")
			cout << "Marka : " << marka << " Model : " << model << " Yil : " << yil << "\n";
		else
			cout << "Marka : " << marka << " Yil : " << yil << "\n";
	}
};



int main()
{
	Araba a1, a2("Opel", "Vectra", 2015), a3("Mitsubishi", "Evo"), a4("Fiat"), a5("Fiat", 2017);
	a1.Goster();
	a2.Goster();
	a3.Goster();
	a4.Goster();
	a5.Goster();
}