In C programming, if want to check there is a preprocessor, use:
#ifdef __ITSNAME_H__
//code
#endif
my question is that is there a preprocessor with POI name? if yes, what is it?
In C programming, if want to check there is a preprocessor, use:
#ifdef __ITSNAME_H__
//code
#endif
my question is that is there a preprocessor with POI name? if yes, what is it?
What's POI ?
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
I find answer.
POI is not a general preprocessor, it was a user-defined preprocessor defined in Makefile.
