Parenting class

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1.67/5 (5 votes)

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Is this pinguin a bird ? :)

[a picture of the pinguin, containing also advertising, has been removed]

Please
any idea to prevent the usage of its fly() function ? :)

class bird
{
...
public:
...
  virtual void fly();
};

class pinguin : public bird
{
...
};

Posted 4-Mar-10 22:13pm

georgew12

Updated 5-Mar-10 2:02am

CPallini

v6

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2 solutions

Solution 2

Hmm... :)

bird theBird;
pinguin thePinguin;
 
covey theCovey;
theCovey.add(theBird);
theCovey.add(thePinguin);
 
bird* pBird = theCovey.GetFirstBird();
while (pBird) {
  pBird->fly();
  // now is here a pinguin, a bird as well... :)
  pBird = theCovey.GetNextBird();
}

Posted 5-Mar-10 0:17am

Eugen Podsypalnikov

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O.Phil · Accepted Answer · 2010-03-04T23:32:00

Solution 1

class pinguin : bird
{
   new private void fly() { }
}

The fly method will be private, i.e. not accessible from any implementation.

Posted 4-Mar-10 23:32pm

O.Phil