public void IsDomestic() { string[] domestic = new string[] { "GM", "Ford", "Lincoln", "Chrysler", "Caddilac", "Jeep", "Tesla" }; foreach (string domCar in domestic) { if (Make.Contains(domCar)) { Console.WriteLine("Domestic"); } } string[] foreign = new string[] { "Nissan", "Mitsubishi", "Infiniti", "Honda", "Toyota", "Mercedes Benz", "Audi", "BMW", "Volkswagen" }; foreach (string forCar in foreign) { if (Make.Contains(forCar)) { Console.WriteLine("Foreign"); } } }