Explain the rules for overloading an operator, C/C++ Programming

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Rules for overloading an operator

This summarizes the most significant points you need to know in order to do operator function overloading.

The only operators you may overload are the ones from the C++ list and not all of those are available. You cannot arbitrarily choose a new symbol (such as @) and attempt to "overload it.
Start by declaring a function in the normal function fashion, but for the function name use the expression:

Operator op

Where op is the operator to be overloaded. You may leave one or more spaces before op.

The pre-defined precedence rules cannot be altered. i.e. you cannot, for instance, make binary '+' have higher precedence than binary '*'. In addition, you cannot alter the associativity of the operators.

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