C-Macro & Preprocessor Archives

Last Updated: 03 June 2025

Preprocessors are programs that process the source code before the actual compilation begins. They are not part of the compilation process but operate separately, allowing...read more

Misc

C Language

C-Macro & Preprocessor

C program to print a string without any quote (single or double) in the program

Last Updated: 31 January 2022

Print a string without using quotes anywhere in the program using C or C++.Note : should not read input from the console.The idea is to use macro processor in C (Refer poi...read more

C/C++ Puzzles

C Language

c-puzzle

C-Macro & Preprocessor

#pragma Directive in C

Last Updated: 09 January 2024

In C, the #pragma directive is a special purpose directive that is used to turn on or off some features. #pragma also allows us to provide some additional information or i...read more

Misc

C Language

C-Macro & Preprocessor

Macro & Preprocessor

#include in C

Last Updated: 27 May 2025

In C programming, the #include directive is very important to integrate any external files (header files) into a program, as the #include is used for file inclusion(a proc...read more

C Language

C-Macro & Preprocessor

Types of pragma directives in C

Last Updated: 04 April 2021

Pragma Directives: The pragma directive is used to control the actions of the compiler in a particular portion of a program without affecting the program as a whole. Pragm...read more

C Programs

C Language

C Macro

C-Macro & Preprocessor

Macro & Preprocessor

#define vs #undef in C language

Last Updated: 22 June 2023

In this article, we will discuss the difference between #define and #undef pre-processor in C language.What are Pre-Processor Directives?Pre-processor is a program that pe...read more

C Programs

C Language

C-Macro & Preprocessor

Macro & Preprocessor

#define in C

Last Updated: 14 July 2023

In C programming, #define is a preprocessor directive that is used to define macros. The macros are the identifiers defined by #define which are replaced by their value be...read more

C Language

Picked

C-Macro & Preprocessor

Multiline macros in C

Last Updated: 28 May 2017

In this article, we will discuss how to write a multi-line macro. We can write multi-line macro same like function, but each statement ends with "\". Let us see with examp...read more

C Language

C-Macro & Preprocessor

Variable length arguments for Macros

Last Updated: 21 January 2022

Like functions, we can also pass variable length arguments to macros. For this we will use the following preprocessor identifiers.To support variable length arguments in m...read more

C Language

c-puzzle

C-Macro & Preprocessor

Branch prediction macros in GCC

Last Updated: 28 May 2017

One of the most used optimization techniques in the Linux kernel is " __builtin_expect". When working with conditional code (if-else statements), we often know which branc...read more

C-Macro & Preprocessor

A C Programming Language Puzzle

Last Updated: 21 June 2018

Give a = 12 and b = 36 write a C function/macro that returns 3612 without using arithmetic, strings and predefined functions.We strongly recommend you to minimize your br...read more

C Language

cpp-macros

cpp-puzzle

C-Macro & Preprocessor

What’s difference between header files "stdio.h" and "stdlib.h" ?

Last Updated: 02 January 2025

In C programming, standard header files provide various inbuilt functionalities and two of the most commonly used standard header files are stdio.h and stdlib.h. The stdio...read more

C-Macro & Preprocessor

Difference between #define and const in C

Last Updated: 02 January 2025

In C, both #define and const define constant values, but these constants differ greatly in their behaviors and implementation. #define is a preprocessor directive used to ...read more

C Language

cpp-macros

C-Macro & Preprocessor

How to print a variable name in C?

Last Updated: 02 January 2025

Printing a variable name means printing the identifier that is assigned to the variable. To print it, it should be in the form of string. This can be done by using stringi...read more

C Language

c-puzzle

cpp-macros

C-Macro & Preprocessor

C Preprocessor Directives

Last Updated: 21 May 2025

In C programming, the preprocessor is a program that process the source code before the actual compilation begins. It uses preprocessor directives are commands that instru...read more

C++

C Basics

cpp-macros

C-Macro & Preprocessor

Macro & Preprocessor