C #pragma in C Language
Categories: C language
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:
#pragma token
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<stdio.h>
#include<conio.h>
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