The C preprocessor is a macro preprocessor (allows you to define macros) that transforms your program before it is compiled. These transformations can be the inclusion of header files, macro expansions, etc. All
C语言的预处理器(Preprocessor)理论上是编译的第一步,通过预处理器来提供了一些特性,例如宏、使用##串联参数、条件包含(Conditional Inclusion)等。 宏替换(Macro Substitution) C语言在预处理器中提供了宏替换(Macro Substitution)的使用。宏的作用域是从#define到文件结束。宏最简单的定义格式如下: #define name ...
HideSet prevent T from duplicate expansion of the same macro Tag is defined below:{ None, Placemarker, Identifier, Others }where: None indicates the token is the concatenation of two and its category not yet determined Placemarker indicates an empty token with nothing in its Value Identifier in...
Here, we are going to learn how to define macros –In this example, we are defining two Macros YES and NO by using #define preprocessor directive.
C / ANSI-C Macro Preprocessor Macro Function Define Macro as simple function #include <stdio.h> #define SUM(i, j) ((i)+(j)) int main(void) { int sum; sum = SUM(10, 20); printf("%d", sum); return 0; } Related examples in the same category...
The Maple Preprocessor Calling Sequence Parameters Description Compatibility Calling Sequence $include fileName $include fileName $define macroName macroDefinition $define macroName ( macroParameters ) macroDefinition $undef macroName $ifdef macroNa
Introduce or expose a memory leak and UB, see llvm/llvm-project#68620 Patch is 185.50 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/95299.diff 96 Files Affected: (modified) clang-tools-extra/test/pp-trace/pp-trace-macro.cpp (-9) (modified...
while $i!=0 :arg=$arg and i=$i; !$i = $i - 1 !endwhile !$arg = $arg - 1 !endwhile :procedure end; !endprocedure start $foo(2) end @enduml [改编自QA-10838] While循环(在Mindmap图上)。@startmindmap !procedure $foo($arg) !while $arg!=0 !$i=3 **[#palegreen] arg...
Advanced Macro Tricks In addition to simple substitution, the preprocessor can also perform a bit of extra work on macro arguments, such as turning them into strings or pasting them together. Pasting Tokens Each argument passed to a macro is a token, and sometimes it might be expedient to pas...
defined operator Simplifies the writing of compound expressions in certain macro directives See also Preprocessor directives Predefined macros c/c++ preprocessor referenceFeedback Was this page helpful? Yes No Provide product feedback | Get help at Microsoft Q&A English...