Preprocessor - Wikipedia In computer science, a preprocessor (or precompiler) [1] is a program that processes its input data to produce output that is used as input in another program The output is said to be a preprocessed form of the input data, which is often used by some subsequent programs like compilers
C Preprocessors - GeeksforGeeks 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 instruct the preprocessor to perform specific actions
Preprocessor - cppreference. com The preprocessor has the source file translation capabilities: conditionally compile parts of source file (controlled by directive #if, #ifdef, #ifndef, #else, #elif, #elifdef, #elifndef (since C++23), and #endif)
C Preprocessors Overview - Online Tutorials Library In simple terms, a C Preprocessor is just a text substitution tool and it instructs the compiler to do the required pre-processing before the actual compilation We'll refer to the C Preprocessor as CPP
C C++ preprocessor reference | Microsoft Learn The preprocessor performs preliminary operations on C and C++ files before they are passed to the compiler You can use the preprocessor to conditionally compile code, insert files, specify compile-time error messages, and apply machine-specific rules to sections of code
2. 10 — Introduction to the preprocessor – Learn C++ - LearnCpp. com In this phase, a program called the preprocessor makes various changes to the text of the code file The preprocessor does not actually modify the original code files in any way -- rather, all changes made by the preprocessor happen either temporarily in-memory or using temporary files
C Preprocessors - W3Schools The preprocessor is a program invoked by the compiler that modifies the source code before the actual composition takes place This tutorial describes C Preprocessor Directives
Preprocessor In C [Explained With Examples] - CsTutorialpoint Preprocessor, as the name suggests, is a program that processes our source code before compilation The preprocessor scans and modifies the entire source code, and then passes that modified code to the compiler for compilation
C Preprocessor and Macros - W3Schools Preprocessor and Macros In C, the preprocessor runs before the actual compilation begins It handles things like including files and defining macros Preprocessor commands begin with a # symbol and are called directives