Use unsage code to swap two integers : Unsafe Code « Language Basics « C# / C Sharp

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Use unsage code to swap two integers

  





public class TestUnsafeApp

{

    unsafe public static void Swap(int* pi, int* pj)

    {

        int tmp = *pi;

        *pi = *pj;

        *pj = tmp;

    }

   

    public static void Main(string[] args)

    {

        int i = 3;

        int j = 4;

        Console.WriteLine("BEFORE: i = {0}, j = {1}", i, j);

   

        unsafe { Swap(&i, &j); }

   

        Console.WriteLine("AFTER:  i = {0}, j = {1}", i, j);

    }

}

Related examples in the same category

1.	int pointer variable
2.	Unsafe Methods
3.	Accessing Structure Members with a Pointer
4.	Supported sizeof() Types
5.	Fixing Managed Data in Memory
6.	Allocating Memory from the Stack
7.	Get variable address in unsafe mode
8.	Unsafe code: get data type size
9.	Address and size of pointer object
10.	Using the unsafe keyword
11.	object pointer
12.	Use unsafe method to clone array
13.	unsafe and fixed block
14.	mark method as unsafe
15.	Pointer for struct
16.	Compare pointer

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