Although the compiler doesn't have a separate preprocessor, the directives described in this section are processed as if there were one. You use them to help in conditional compilation. Unlike C and C++ directives, you can't use these directives to create macros. A preprocessor directive must ...
Although the compiler doesn't have a separate preprocessor, the directives described in this section are processed as if there were one. You use them to help in conditional compilation. Unlike C and C++ directives, you can't use these directives to create macros. A preprocessor directive must ...
Although the compiler doesn't have a separate preprocessor, the directives described in this section are processed as if there were one. You use them to help in conditional compilation. Unlike C and C++ directives, you can't use these directives to create macros. A preprocessor directive must ...
The preprocessor directives instruct the compiler how to treat the source code. For example, under certain conditions, you might want the compiler to ignore portions of the code, and under other conditions, you might want that code compiled. The preprocessor directives give you those options and ...
nothing, in this case the directive has no effect. a line break. Themodule and import directivesare also preprocessing directives. (since C++20) Preprocessing directives must not come from macro expansion. #define EMPTYEMPTY# include <file.h> // not a preprocessing directive ...
C-preprocessor directives v17 Suggest edits The ECPGPlus C-preprocessor enforces two behaviors that depend on the mode in which you invoke ECPGPlus: PROC mode Non-PROC mode Compiling in PROC mode In PROC mode, ECPGPlus allows you to:...
The GNU C preprocessor is used by the gcc compiler to preprocess the source files.In the preceding link, you can find how the preprocessor parses the directives and how it creates the parse tree. The document also provides an explanation of the different macro expansion algorithms. While it ...
which would result in 1 * 5 being evaluated before the addition, not after. Oops! It is also possible to write simply #define [identifier name] which defines [identifier name] without giving it a value. This can be useful in conjunction with another set of directives that allow conditional...
Learn about the C++ preprocessor, its directives, and how to use it effectively in your C++ programming.
#define NAME"C:\ETC\DATA" #else /* DOS */ #define NAME"/etc/data" #endif /* DOS */ Actually, the#elseand#endifdirectives take no arguments. The following them is entirely a comment, but a necessary one. It serves to match#elseand#endifdirective with the initial#ifdef. ...