How to screen the tilde in preprocessor macros?

Question

I try write macros to define some class, but in this case i can not write destructor, because the tilde is a special character for preprocessor.

There is a example:

#define CLASS( cName ) \
class cName \
{ \
public: \
    cName() \
    { \
    \
    } \
    \
    ~cName() \
    { \
    \
    } \ 
};\

How to screen the tilde?

What compiler are you using? What error/warning message do you see? — owacoder, Jan 04 '17 at 18:46
Thanks for the error number, but what exact error message(s) do you see? — Richard Critten, Jan 04 '17 at 18:53
The tilde is *not* a special character to the preprocessor. Your error comes from something else. — Quentin, Jan 04 '17 at 18:58
@Richard Critten i see the syntax errors C2059, C2143, but this errors are effect. They generated subsequently using the tilde — Sergey Creator, Jan 04 '17 at 18:58
Confirming my thoughts: [it works fine](http://coliru.stacked-crooked.com/a/bcc66093f068d674). — Quentin, Jan 04 '17 at 19:00
Study of what? How to write incomprehensible, unmaintainable code? Why don't you study something that will make your code better, not worse? — Rob K, Jan 04 '17 at 19:08
If you *need* a macro like this, I recommend taking keyboarding or typing courses. I often cheat by using a stencil, then doing a global replace. — Thomas Matthews, Jan 04 '17 at 20:41
See [Why preprocessor macros are evil](http://stackoverflow.com/questions/14041453/why-are-preprocessor-macros-evil-and-what-are-the-alternatives) — Thomas Matthews, Jan 04 '17 at 20:42

snoopy · Accepted Answer · 2017-01-04T18:57:10.633

0

This is the proper way to declare it:

#define MAKECLASS(name) \
class name \
{ \
public: \
    name() {} \
    ~name() {} \
};

MAKECLASS(a)

But I should warn you that this is in general a bad idea, why does the design of your program requires this? If it doesn't, you better not using it.

edited Jan 04 '17 at 18:57

answered Jan 04 '17 at 18:56

snoopy

thanks, i found a problem, a one line has tab character after the slash ) Thanks you very much! – Sergey Creator Jan 04 '17 at 19:12

1 Answers1