#pragma in C

 The #pragma in C is used to provide additional information to the compiler, control compiler-specific behaviors, or enable/disable certain features like optimizations, warnings, or dependencies.

 It allows you to fine-tune the compilation process and can be used for platform-specific or optimization-related tasks.

Syntax of #pragma in C

#pragma directive_name [option]

Example:

 // Program for #pragma in C
#include<stdio.h>

#pragma GCC optimize("O3")

int main() {
    printf("Optimized code example.\n");
    return 0;
}

Output:

Optimized code example.

Uses of #pragma in C

Optimizations: To instruct the compiler to apply specific optimization levels.

#pragma GCC optimize("O3")

Warnings: To enable or disable certain compiler warnings.

#pragma GCC diagnostic warning "-Wunused-variable"

Platform-specific Code: To handle platform-specific code or dependencies.

#pragma once

Dependencies: To link or include specific libraries or headers.

#pragma comment(lib, "mylib.lib")

Inline Functions: To hint the compiler to inline a function.

#pragma inline

Data Alignment: To specify the alignment requirements for data structures.

#pragma pack(1)