What is the return value of the function

Function return value refers to the result returned after the function completes execution. The return value can be any data type, including integers, floating point numbers, characters, strings, Boolean values, etc. The function return value is to pass the execution result of the function to other parts for use, which can be used for further calculation, judgment, output and other operations. By returning the calculation results of the function to the caller, different parts of the program can be decoupled and the maintainability and readability of the code can be improved. When using function return values, you need to pay attention to the type and value range of the return value. This topic also provides other articles related to function return values, which you can read for free.