class DataTypes{ // Primitive Type // Boolean private bool b = true; private System.Boolean boolean = false; private byte by = 0; private sbyte sby = -1; private int i = -10; private uint ui = 10; private decimal d = (decimal)3.14m; private nint ptr = 0; private System.IntPtr p = 0; private const int constVal = 10; private readonly int readonlyVal = 10; ..