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Qu'est-ce (qui) est pre-processor - définition

TYPE OF COMPUTER PROGRAM WHICH PROCESSES THE INPUT FOR ANOTHER PROGRAM

Preprocessing directive; Preprocessor (programming); Pre-processing; Pre-process; Condition out; .i; Precompiler; Preprocessor macro; Preprocess; Lexical preprocessor; Precompilation; Pre-processor; Pre-compiler

preprocess

¦ verb subject to preliminary processing.

Derivatives

preprocessor noun

condition out

To prevent a section of code from being compiled by surrounding it with a conditional compilation directive whose condition is always false. The canonical examples of these directives are "#if 0" (or "#ifdef notdef", though some find the latter bletcherous) and "#endif" in C. Compare comment out. [Jargon File] (1994-11-30)

preprocessor

<programming> A program that transforms input data in some way before it is read by the main program. In the case of a compiler, the input is source code. The main advantage of using a preprocessor is that it is possible to change the specification of the input data without changing the main program. The separation can also help to make the system's overall behaviour easier to understand. The disadvantage is that performance may be reduced by the extra input and output performed between the two programs. For example, the C preprocessor, cpp, handles textual macro substitution (it acts as a "macro preprocessor"), conditional compilation and inclusion of other files. A preprocessor may be used to transform a program into a simpler language, e.g. to transform C++ into C. (2007-04-05)

Wikipédia

Preprocessor

In computer science, a preprocessor (or precompiler) 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. The amount and kind of processing done depends on the nature of the preprocessor; some preprocessors are only capable of performing relatively simple textual substitutions and macro expansions, while others have the power of full-fledged programming languages.

A common example from computer programming is the processing performed on source code before the next step of compilation. In some computer languages (e.g., C and PL/I) there is a phase of translation known as preprocessing. It can also include macro processing, file inclusion and language extensions.

https://en.wikipedia.org/wiki/Preprocessor