/// <summary> /// runnning a car by catType /// </summary> /// <param name="carType">car</param> /// <returns>if catType found return true, else return false.</returns> public static bool RunCar(string carType) { switch (carType) { case "FireEngine": FireEngine fire = new FireEngine(); fire.RunFireEngine(); return(true); case "Bus": Bus bus = new Bus(); bus.RunBus(); return(true); case "PoliceCar": PoliceCar police = new PoliceCar(); police.RunPoliceCar(); return(true); default: return(false); } }