This question already has answers here: Closed 11 years ago. Possible Duplicate: "static const" vs "#define" in c
#define BINARY_TREE_PARENT_CORRECT(son, parent) ((son) ? (son->parent == parent) : 1) It turns out that the parent in son->parent which means a struct member will al开发者_C百科so be replaced
Is it possible to issue a case insensitive #define statement with the preprocessor? For example, I want to convert any casing of foobar to spameggs, i.e.:
What should be done for DD ? if #define HEADING_TITLE_PROJECT_NAME\"<= Version Maintenance Based On Comp开发者_如何学运维iled DateTime =>\"
Example #define Echo(a)a #define Echo(a) (a) I realize there probably isn’t a signific开发者_开发技巧ant difference here, but why would you ever want to include the a within parenthesis inside the
I\'m currently trying to switch between a few different default Icons in a Visual C++ .rc file using #ifdef tags.
While reading http://en.wikipedia.org/wiki/C_pre开发者_JS百科processor#Multiple_evaluation_of_side_effects, I came across this example:
I\'ve come across this #define DsHook(a,b,c) if (!c##_) {INT_PTR* p=b+*(INT_PTR**)a;VirtualProtect(&c##_,4,PAGE_EXECUTE_READWRITE,&no); *(INT_PTR*)&c##_=*p;VirtualProtect(p,4,PAGE_EXECUTE
Apparently the preprocessor macros in C++ are justifiably feared and shunned by the C++ community. However, there are several cases where C++ macros are beneficial.
I define a wxObjArray in my TMainFrame.h as follows: #ifndef __TMainFrame__ #define __TMainFrame__ #include \"MyApp_gui.h\"
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