Program:

The source code to demonstrate the pointer as a data member is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to demonstrate the pointer as a data member.

using System;
unsafe class UnsafeEx
{
    int* p;
    int val;

    public UnsafeEx(int v)
    {
        val = v;
        p = &v;

        Console.WriteLine("Val : " + *p);
    }
    static void Main(string[] args)
    {
        UnsafeEx U1 = new UnsafeEx(10);
        UnsafeEx U2 = new UnsafeEx(20);
        UnsafeEx U3 = new UnsafeEx(30);
    }
}

Output:

Val : 10
Val : 20
Val : 30
Press any key to continue . . .

Explanation:

In the above program, we created class UnsafeEx that contains two data members val and an integer pointer p.  Here we defined a parameterized constructor to initialized the data member val and then assign the address of data member val to the pointer p and print the value of val using pointer within the constructor of the class. Here we used the unsafe keyword with the class definition.