Hex Editor Neo Documentation Definitive Guide Structure Viewer Language Reference Preprocessor Overview #pragma once Directive
#pragma once directive prevents the file from being included multiple times.
fileB.h and into
fileC.h. If you now write a
fileD.h with the following two lines:
#include "FileB.h" #include "FileC.h"
“fileA.h” will get included twice. In order to prevent this, put a following line into the “fileA.h” file: