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From: Michael_Hoennig@hh.maus.de (Michael Hoennig)
Newsgroups: comp.lang.c
Subject: const methods
Message-ID: <4633@hh.maus.de>
Date: 22 Jun 91 22:06:00 GMT
Distribution: world,comp
Organization: Maus Mailbox Netz - UUCP-Gateway Bremen
Lines: 31


Hi Marina,

MG>        virtual int f() const;
MG>Does anybody know the meaning of this const postfix ??

this method will not change the object to which this is pointing.
If you will use const parameters of a class, you can only access
these const-methodes:

class X
{
    int n;
public:
    ...
    void theConst() const;
    void theOther();
    ...
};

void foo( const X aX )
{
    X.theConst(); // allowed
    X.theOther(); // not allowed, type mismatch error or warning
}

Adios

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