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Where to use 'pragma' of C language?

#pragma :- is a directive

As we know that each implementation of C andC++ support some faetures unique to its host machine or Operating system.

The #pragma directive offers a way for each compiler to offer machine and operating System specific faetures while retaining overall compatibility with the C and C++

pragmas are machine or Operating System specific by defination, and usually diffrent for every compiler.

Where to Use:-

1)pragmas can be used in conditional statements

2)pragmas can be used to provide new preprocessor funcationality

3)pragmas can be used to provide implementation-defined information to the compiler.