How can I use the pragma directive in C?

[Tailor]

Hello, Everyone. I am MCA student of first year. I have the C programming in syllabus of first year. I know C is the base of all programming languages. but I don't have the good knowledge of the C programming. So I just want to know about the #pragma directives in C. I also want to know how can use it in the program. Which are they? So if anyone know about the pragma directive then help me out as soon as possible.

[Praetor]

Hi, I guess at least you heard about the #pragma directive. Pragma is nothing but the implementation of specific directive that means each pragma directive has the different implementation rule and use. There are many type of different pragma directive and they varies from one compiler to another compiler . If compiler does not recognizes the particular pragma then it ignores the pragma statement without showing any error or warning message and execute the whole program assuming that this pragma statement is not present.

[Katty]

The #pragma directive is the method that is specified by the standards of C to give some additional information to the C compiler, that what is specified in the C language itself. A C compiler is free to attach any meaning it likes to other pragmas. For example Suppose any arbitrary pragma directive is #pragma world:
#pragma world
void main()
{
printf(“ C is the powerful language “);
}
Output: C is the powerful language

[kelfro]

I suggest you to use the one the following pragma directive.
List of pragma directive:
1. #pragma startup
2. #pragma exit
3. #pragma warn
4. #pragma option
5. #pragma inline
6. #pragma argsused
7. #pragma hdrfile
8. #pragma hdrstop
9. #pragma saveregs
I hope it will helps you to understand about the pragma directive.