When the preprocessor encounters this directive, it replaces any occurrence ofidentifierin the rest of the code byreplacement. Thisreplacementcan be an expression, a statement, a block or simply anything. The preprocessor does not understand C++, it simply replaces any occurrence ofidentifierbyreplac...
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 ...
Software that performs some preliminary processing on the input before it is processed by the main program. Seepreprocessingandcompiler directive. Copyright © 1981-2019 byThe Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is stri...
So in visual studio community DEBUG directive will be used if we are in debug, but does this mean that even exe will use everything that is in DEBUG? Now if we define wither one like TEST will this be active in release when we create exe to deploy too?
If we compile and run above code, this would produce the following result − Value of __LINE__ : 6 Value of __FILE__ : test.cpp Value of __DATE__ : Feb 28 2011 Value of __TIME__ : 18:52:48 Print Page Previous Next
directive">, InGroup<ExtraTokens>; @@ -513,8 +505,6 @@ def err_pp_invalid_directive : Error< "invalid preprocessing directive%select{|, did you mean '#%1'?}0">; def warn_pp_invalid_directive : Warning< err_pp_invalid_directive.Summary>, InGroup<DiagGroup<"unknown-directives">>; ...
#define #undef #include #if #else #elif #endif #ifdef #ifndef #error (#warning is NOT A STANDARD DIRECTIVE, since not shown in the page above, but most compilers have it. more:http://stackoverflow.com/questions/171435/portability-of-warning-preprocessor-directive) ...
Discusses the four preprocessor-specific operators used in the context of the#definedirective. Predefined macros Discusses predefined macros as specified by the C and C++ standards and by Microsoft C++. Pragmas Discusses pragmas, which offer a way for each compiler to offer machine- and operating ...
An Explanation of the #cmakedefine Preprocessor Directive Question: Currently, I am examining the source-code of ZeroMQ with the intention of building it from scratch. During this process, I stumbled upon a section labeledplatform.hpp.in, which includes: ...
Hi, I am linking a c-main to a function in a fortran90 module and I am debugging with idb. It cannot step into the fortran90 function if the function name is defined by a preprocessor directive. The function is declared by a preprocessor constant: I want to...