Functions

Question 1

Function

Answer 1

A named block of statements that can be called within a program

Question 2

Purpose of functions

Answer 2

Enable reuse of code
Allow for code modularity
Help write more complex programs

Question 3

Parameters

Answer 3

Allow variation in function behaviour

Question 4

Formal Parameters

Answer 4

List of parameters in its definition

Question 5

Actual parameters/arguments

Answer 5

Whenever the function is called a value must be provided for each of the formal parameters

Question 6

Pass-By-Value

Answer 6

Only a copy of the value of a parameter is sent to a function
So if there is an original variable, it cannot be changed by the function changing the parameter

Question 7

Local variable

Answer 7

New variables can be created and used within functions but they disappear when the function ends

Question 8

Global variable

Answer 8

Global variables can be accessed but not changed

Use the global statement to allow changes to global variable