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Question :
What is function overloading and operator overloading?



Category C++ Interview Questions
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Added on 7/19/2006
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Function overloading: C++ enables several functions of the same name to be defined, as long as these functions have different sets of parameters (at least as far as their types are concerned). This capability is called function overloading. When an overloaded function is called, the C++ compiler selects the proper function by examining the number, types and order of the arguments in the call. Function overloading is commonly used to create several functions of the same name that perform similar tasks but on different data types.
Operator overloading allows existing C++ operators to be redefined so that they work on objects of user-defined classes. Overloaded operators are syntactic sugar for equivalent function calls. They form a pleasant facade that doesn't add anything fundamental to the language (but they can improve understandability and reduce maintenance costs).



Function overloading in implicit feature of C++.
Though the operator overloading is also implicit feature of the C++, programmer need to write the operator function (either member function or non-member function) to give extra meaning to the operator.



 Posted by: mahendra    

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