Address and size of pointer object : Unsafe Code « Language Basics « C# / C Sharp

1. C# / C Sharp
2. Language Basics
3. Unsafe Code

Address and size of pointer object

  
using System;

class MainEntryPoint {
    static unsafe void Main() {
        int x = 10;
        short y = -1;
        byte y2 = 4;
        double z = 1.5;
        int* pX = &x;
        short* pY = &y;
        double* pZ = &z;

        Console.WriteLine("Address of x is 0x{0:X}, size is {1}, value is {2}",(uint)&x, sizeof(int), x);
        Console.WriteLine(
            "Address of y is 0x{0:X}, size is {1}, value is {2}",
            (uint)&y, sizeof(short), y);
        Console.WriteLine(
            "Address of y2 is 0x{0:X}, size is {1}, value is {2}",
            (uint)&y2, sizeof(byte), y2);
        Console.WriteLine(
            "Address of z is 0x{0:X}, size is {1}, value is {2}",
            (uint)&z, sizeof(double), z);
        Console.WriteLine(
            "Address of pX=&x is 0x{0:X}, size is {1}, value is 0x{2:X}",
            (uint)&pX, sizeof(int*), (uint)pX);
        Console.WriteLine(
            "Address of pY=&y is 0x{0:X}, size is {1}, value is 0x{2:X}",
            (uint)&pY, sizeof(short*), (uint)pY);
        Console.WriteLine(
            "Address of pZ=&z is 0x{0:X}, size is {1}, value is 0x{2:X}",
            (uint)&pZ, sizeof(double*), (uint)pZ);

        *pX = 20;
        Console.WriteLine("After setting *pX, x = {0}", x);
        Console.WriteLine("*pX = {0}", *pX);

        pZ = (double*)pX;
        Console.WriteLine("x treated as a double = {0}", *pZ);

        Console.ReadLine();
    }
}

   
  

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