static void Main(string[] args)
{
SimpleCalculator calc = new SimpleCalculator();
Console.WriteLine(calc.FindMaxOfThree(3, 4, 5));
Console.ReadLine();
}
static void Main(string[] args)
{
SimpleCalculator calc = new SimpleCalculator();
Console.WriteLine(calc.Square(4));
Console.WriteLine(calc.AddTwoNumbers(10, 20));
Console.WriteLine("Enter number: ");
string input = Console.ReadLine();
int number = int.Parse(input);
Console.WriteLine(calc.Square(number));
Console.WriteLine(calc.FindMaxOfThree(10, 10, 10));
Console.ReadLine();
}