What are the different return types in C++ functions?

What are the different return types in C++ functions?

In C++, functions can return various types, including primitive types like int, float, and char, as well as user-defined types like classes and structs.

Can a function return multiple values?

Yes, a function can return multiple values using structures, classes, or by using pointers and references.

What is the difference between returning by value and by reference?

Returning by value creates a copy of the data, while returning by reference allows the function to return a reference to the original data, which can be more efficient.

Are there any special return types in C++?

Yes, C++ has special return types like void (for functions that do not return a value) and std::optional for functions that may or may not return a value.