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what is the difference between function overriding and virtual function?why we are virtual function?
can u explain it pls.....
A virtual function is one which will call the most derived override of the function unless a specific version of the function is specified.

Overriding a function means that you replace the behavior of a function defined by a parent class. It is most useful when the function is virtual, but it has some use when the function is no virtual.
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