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Swapping of two numbers in C# using pointer

Posted By:Abhisek Panda       Posted Date: November 14, 2009    Points: 10    Category: Visual Studio    URL: http://www.dotnetspark.com  
 

See the below program for swapping of two numbers using pointer in C#.

class Swapping
{

//declaring pointers inside unsafe code
unsafe public static void UnsafeSwap(int* i, int* j)
{
int temp = *i;
*i = *j;
*j = temp;
}

static void Main(string args[])

{
// Values for swapping.

int i = 10, j = 20;
// Swap values using pointer

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

unsafe //passing the values to unsafe code
{
UnsafeSwap(&i, &j);
}

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

}
}
Output:-
Values before swap: i = 10, j = 20
Values after swap: i = 20, j = 10

     

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