This document discusses function returns in programming. It explains that the return statement is used to end a function's execution and return a value to the calling statement. A function can return a value or expression, and any statements after a return will not be executed. The document also demonstrates how to declare a basic return function and call a function to invoke it and use the returned value.

1. FUNCTION RETURNS

2. THE RETURN STATEMENT
• Used to end execution of a function
• Can be placed anywhere in a function
• Statements that follow the return statement will not be executed
• Can be used to prevent abnormal termination of an application
• A function can return a value or expression back to the statement that called the
function.
• Ex.
• x = random.random()
• val = math.sqrt(16)
• In a function that returns a value, the return statement can be used to return a value
from the function to the point of call.
• assign it to a variable
• send it to print
• use it in an expression

3. DECLARING A RETURN FUNCTION
• Code:
Declaring a Basic Function:
def functionName ():
Function Body
return valueToReturn
• Question: What do you believe will happen if write a return
statement with no return value?
• Question: What concept does this remind you of?

4. CALLING A FUNCTION
• Functions just like variables need to be called in order to be invoked
• Code:
Calling a Function:
functionName ()
o Ex.
val = rtnFnCall()
print(rtnFnCall())
val = rtnFnCall() * 5

5. FUNCTION WITH RETURN EXAMPLE