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how do you use fileguards (#ifndef)?!!

BillFredBillFred
in C and C++
This is what I got trying to use fileguards and it doesn't work. LList is the name of the class. LList.h is name of my header file.

#ifndef LList
#define LList
#include "LList.h"
#endif

I believe it is supposed to follow the model below
#ifndef CLASSNAME
#define CLASSNAME
body of include
#endif

Comments

  • AsmGuru62AsmGuru62
    [color=Blue]It is better to put these lines INSIDE the header file itself:[/color]
    [code]
    //
    // FILE: LLIST.H
    //
    #ifndef LLIST_H
    #define LLIST_H

    ... contents of the header file goes here ...

    #endif // LLIST_H
    [/code]
    [color=Blue]Then you simply include the file anywhere without bothering to surround it with guards - they are already inside the house!

    :-)[/color]
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