Virtual Function return data type must be the same.It is better not to use it when calls are frequent because a program can get slow.The reason for using a virtual function is the same as that of inheritance. The member function can be called as an object of the parent class. Example code 1234567891011121314151617181920212223242526272829303132333435363738394041424344class Fruit {protected: strin..
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2018. 11. 22. 13:00
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