explain operator overloading with an example

1In C++, we can change the way operators work for user-defined types like objects and structures. This is known as operator overloading. For example,
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3Suppose we have created three objects c1, c2 and result from a class named Complex that represents complex numbers.
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5Since operator overloading allows us to change how operators work, we can redefine how the + operator works and use it to add the complex numbers of c1 and c2 by writing the following code:
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7result = c1 + c2;
8instead of something like
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10result = c1.addNumbers(c2);
11This makes our code intuitive and easy to understand.
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13Note: We cannot use operator overloading for fundamental data types like int, float, char and so on.
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15Syntax for C++ Operator Overloading
16To overload an operator, we use a special operator function.
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18class className {
19    ... .. ...
20    public
21       returnType operator symbol (arguments) {
22           ... .. ...
23       } 
24    ... .. ...
25};