What is the unsafe keyword?

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What is the unsafe keyword?

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The unsafe keyword is used in case of pointers in C#. The unsafe keyword denotes an unsafe code or block, which is required for any operation involving pointers. The unsafe keyword is applied as a modifier in the declaration of callable members such as methods, properties, and constructors (but not static constructors), as given below:

static unsafe void UnsafeTestFunc(string str, int count) //unsafe method
{
//unsafe code: can use pointers here
}
unsafe
{
   //unsafe block
}

The following code snippet displays the use of the unsafe keyword:

using System;
class UnsafeTestCode
{
    unsafe public static void Main()
   {
       int count = 99098;
       int* pointer; //create an int pointer.
       pointer = &count; //put address of count into pointer.
       Console.WriteLine( "Initial value of count is " + *pointer);
       *pointer = 10; //assign 10 to count via pointer.
       Console.WriteLine( "New value of count is " + *pointer);
       Console.ReadLine();
   }
}

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