public static void Main()
Console.WriteLine("Hello World");
Console.WriteLine(sizeof(int));
Console.WriteLine(sizeof(decimal));
Console.WriteLine(sizeof(float));
Console.WriteLine("The max value of int:"+int.MaxValue+" The min value of int:"+int.MinValue);
Console.WriteLine("The max value of float:"+float.MaxValue + "The min value of float:"+float.MinValue);