During the execution of the program we may query about the data type of an object like int or float like that, and more over incase of inheritance we check the object whether it is an object of the specified class
Ex:
Base class is CEncoder
derived classes like Windows media Encoder...
At runtime we may check whether this object is related to Windows media encoder...
Both are classes
Base class is CEncoder
derived classes like Windows media Encoder...
At runtime we may check whether this object is related to Windows media encoder...
Both are classes
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