What is a return value in functions?

Can you explain what a return value is in programming functions?

Sure! A return value is the output that a function gives back after it has finished executing.

Why is the return value important?

The return value is important because it allows functions to send data back to the part of the program that called them, enabling further processing.

Can you give me an example of a function with a return value?

Of course! Here's a simple example in Python:

def add(a, b):
    return a + b

In this case, the function add returns the sum of a and b.

What happens if a function doesn't have a return value?

If a function doesn't have a return value, it implicitly returns None in Python, meaning it doesn't send any data back.