Preprocessor - Wikipedia
网页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
网页2024年8月28日 · Preprocessors are programs that process the source code before compilation. Several steps are involved between writing a program and executing a program in C. Let us have a look at these steps before …
C preprocessor - Wikipedia
网页The C preprocessor is the macro preprocessor for several computer programming languages, such as C, Objective-C, C++, and a variety of Fortran languages. The preprocessor provides inclusion of header files, macro expansions, conditional compilation, and line control.
2.10 — Introduction to the preprocessor – Learn C
网页6 天之前 · 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.
Preprocessor - cppreference.com
网页2023年8月1日 · Preprocessor. The preprocessor is executed at translation phase 4, before the compilation. The result of preprocessing is a single file which is then passed to the actual compiler.
C/C++ preprocessor reference | Microsoft Learn
网页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 …
C Preprocessor and Macros - Programiz
网页The C preprocessor is a macro preprocessor (allows you to define macros) that transforms your program before it is compiled. In this tutorial, you will be introduced to c preprocessors, and you will learn to use #include, #define and conditional compilation with the help of examples.
1.2: Understanding Preprocessing - Engineering LibreTexts
网页As the name suggests Preprocessors are programs that process our source code before compilation. There are a number of steps involved between writing a program and executing a program in C / C++. Let us have a look at these steps before we actually start learning about Preprocessors.
C | Preprocessors - Codecademy
网页2022年1月1日 · Preprocessors in C scan the source code before it is compiled and transform it with tools like macros. Preprocessor commands and macros are included in the source code file and are interpreted before the source code is passed to the compiler.
Top (The C Preprocessor) - GCC, the GNU Compiler Collection
网页Table of Contents. The C preprocessor implements the macro language used to transform C, C++, and Objective-C programs before they are compiled. It can also be useful on its own. Copyright © 1987-2024 Free Software Foundation, Inc.
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