Return Value
Domain: Programming Fundamentals
🎯 Motivation
Functions often need to give back a result - the return value is what the function hands back to the caller.
📋 Concrete Example
def square(x): return x * x. result = square(4) - result now holds 16, the returned value.
🔗 Analogy
A vending machine - you put in money (arguments), it processes, and returns a drink (return value). You can then use that drink.