Sub-Programs

Question 1

How to create a sub-program in Python:

Answer 1

1 - define it by using ‘def’.
2 - give it a name e.g message 1
3 - the code we then want to be part of the sub-program is indented

Question 2

How to call a sub-program in Python

Answer 2

• By writing out the name of the sub-programs e.g message1 and adding brackets represents us wanting the code inside those sub-programs to execute.

Question 3

Parameters

Answer 3

• A variable that is used as an input to the sub-program.

Question 4

Example of parameters in sub-programs using a simple addition program where the user inputs two numbers.

Answer 4

• def addition (x, y):
• z = x + y
• print(z)
• x = int(input(“Please enter your first number - “)
• y = int(input(“Please enter your second number - “)
• addition(x,y)

Question 5

Function vs Procedure

Answer 5

• A function returns a value
• A procedure does not return a value