directive

include directive

• The include directive tells the preprocessor to open a specified file and insert its contents into the current file.
• form 1, #include <filename>:= search the system header files directories
• form 2 #include "filename":= Search the current directory, then search the system files directories.
• form 2 #include TOKEN:= we can have a #define ABC constant used with the include file, see c_programming_a_modern_approach

#ifdef LINUX
    #define INCLUDE <stdiolinux.h>
#else
    #define INCLUDE <stdiowin.h>
#endif

#include INCLUDE

• We can direct the compiler to search for things with the -Ipath command c

backlinks

• index_of_files.pd