What is the meaning of operator overloading in C++?

Operator overloading in C++ refers to the ability to change or define the original behavior of operators by defining custom functions in the C++ programming language. By overloading operators, users can make custom data types support operations like those of built-in data types, thus improving code readability and conciseness. For example, one can define the addition operation of two custom class objects by overloading the “+” operator. Overloaded operators must adhere to specific syntax rules, and only a select few operators can be overloaded.