How to realize the overloading of C++ function

This article mainly explains "how to realize the overloading of C++ function". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. Now please follow the editor's train of thought slowly and deeply. Let's study and learn how to realize the overloading of C++ function.

1. Overview of function overloading

Function: the function can be the same to improve reusability

The conditions that must be met for function overloading:

1. Under the same scope

two。 Function name is the same

3. The type or number or order of function parameters are different.

Note: the return value of a function cannot be used as a condition for function overloading

Complete code example:

/ / condition of function overloading / / 1, in the same scope / / 2, the same return value type and function name / / 3, different number of parameters, different parameter order or different parameter types void cunc () {cout