C #pragma

by Online Tutorials Library July 14, 2022

C #pragma

The #pragma preprocessor directive is used to provide additional information to the compiler. The #pragma directive is used by the compiler to offer machine or operating-system feature.

Syntax:

Different compilers can provide different usage of #pragma directive.

The turbo C++ compiler supports following #pragma directives.

 #pragma argsused #pragma exit #pragma hdrfile #pragma hdrstop #pragma inline #pragma option #pragma saveregs #pragma startup #pragma warn 

Let’s see a simple example to use #pragma preprocessor directive.

 #include #include  void func() ;  #pragma startup func #pragma exit func  void main(){ printf(“nI am in main”); getch(); }  void func(){ printf(“nI am in func”); getch(); } 

Output:

I am in func I am in main I am in func

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