Display all entries for C/C++ Pre-processor Commands on one page, or view entries individually:
| #, ## | manipulate strings | 
| #define | define variables | 
| #error | display an error message | 
| #if, #ifdef, #ifndef, #else, #elif, #endif | conditional operators | 
| #include | insert the contents of another file | 
| #line | set line and file information | 
| #pragma | implementation specific command | 
| #undef | used to undefine variables | 
| Predefined preprocessor variables | miscellaneous preprocessor variables |