static void Main(string[] args) { Grid grid = new Grid(); grid.showGrid(); string inputX = String.Empty; string inputY = String.Empty; do { Console.WriteLine("Enter square X position"); inputX = Console.ReadLine(); Console.WriteLine("Enter square Y position"); inputY = Console.ReadLine(); }while (!grid.revealSquare(Convert.ToInt16(inputX), Convert.ToInt16(inputY))); }