C # unsafe code

C # allows pointer variables to be used in a function when a block of code uses the unsafe modifier tag.

Unsafe or unmanaged code refers to a block of code that uses a pointer variable.

The following example illustrates the use of a Pointer when the unsafe modifier is used in C #:

Using System;namespace unsafecodeapplication{    class program    {        static unsafe void Main (string[] args)        {            int var =;            int* p = &var;            Console.WriteLine ("Data is: {0}",  var);            Console.WriteLine ("Address is: {0}",  (int) p);            Console.readkey ();}}}    

In order to compile unsafe code, you must switch to the command-line compiler to specify the /unsafe command line.

For example, to compile a program named Prog1.cs that contains unsafe code, you would enter a command on the command line:

/ unsafe Prog1 . CS

If you are using the Visual Studio IDE, you need to enable unsafe code in the project properties.

The steps are as follows:

• Open Project Propertiesby double-clicking the Properties node in Resource Manager (Solution Explorer).
• Click the Build tab.
• Select the option "Allowunsafe code".

can refer to http://www.w3cschool.cc/csharp/csharp-unsafe-codes.html



C # unsafe code