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Tip of the Day
Expertise: Intermediate
Language: C++
October 23, 1998
How is Virtual Inheritance Implemented?
When multiple inheritance is used, it is sometimes necessary to use virtual inheritance. A good example for this is the standard iostream class hierarchy:

//Note: this is a simplified description of iostream classes
class ostream: virtual public ios { /*..*/ }
class istream: virtual public ios { /*..*/ }
class iostream : public istream, public ostream { /*..*/ } //a single ios inherited

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Danny Kalev
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