ref:http://www.cplusplus.com/doc/tutorial/preprocessor/ concolusion: 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/quest...
preprocessor directives and regular statements in c/c++ serve different purposes. directives are used to direct the preprocessor to how to handle your source code before compilation, while regular statements are part of the actual program's logic and execution. additionally, directives are processed ...
and macros. Directives are commands that tell the preprocessor to skip part of a file, include another file, or define a constant or macro. Directives always begin with a sharp sign (#) and for readability should be placed flush to the left of the page. All other uses of the preprocessor...
The multi-line macro can contain preprocessor directives. Conditional directives are very useful in this context. Note however that preprocessor definitions (with#define,#defmacro, or#undef) nested inside multiline macros are only valid within the macro. ...
This dwm 6.5 (061e9fe, 2024-03-19) side project has a different take on dwm patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patchedandthe original code....
./cert.sh: line 4: ./pre30nl: No such file or directory gcc-6 pre30n.c pre30n.c: In function 'main': pre30n.c:7:10: error: stray '\' in program assign(\u04, 01, 4); ^ pre30n.c:2:31: note: in definition of macro 'assign' #define assign(uc1, uc2, val) uc1#...
Programmers will note that this is strange, since most preprocessor directives seem to correspond directly to a unique spp_preprocessor-name.c file. This is easily explained: preprocessor directives correspond to unique preprocessor functions, which usually come one to a file (these directives ...
$line =~ s/.section\s+.note.GNU-stack.*/$comm$&/x if $as_type =~ /^(apple-|armasm)/; $line =~ s/\.syntax/$comm$&/x if $as_type =~ /armasm/; $line =~ s/\.hword/.short/x; $line =~ s/\.xword/.quad/x; ...
Version or any later version published by the Free Software Foundation. A copy of the license is included in the section entitled “GNU Free Documentation License”. This manual contains no Invariant Sections. The Front-Cover Texts are (a) (see below), and the Back-Cover Texts are (b) (...
running xclock in a terminal closing the xclock window restores the terminal window in the current position swapfocus this patch depends on the pertag patch and makes it possible to switch focus with a single shortcut (mod-s) instead of having to think if you should use mod-j or mod-k ...