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Function overloading is a feature in C++ where two or more functions can have the same name but different type of parameters and  different number of parameters.

Note: Overloading of functions with different return types are not allowed.

Operating overloading allows us to  make operators to work for user defined classes. For example, we can overload an operator ‘+’ in a class like String so that we can concatenate two strings by just using +.

Other example classes where arithmetic operators may be overloaded are Complex Number, Fractional Number, Big Integer, etc.