What are the functions in c plus plus?

Functions in C++ are separate procedures or subroutines within a program, that can be called as often as required and which can return values back to their callers. That is, when you make a function call, execution passes to the function and then returns to the caller.

Functions that are class members are also known as member functions, member methods, or simply methods. These work exactly the same as external functions except they are scoped to the class and have access to private members of the class.