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Subprogram1

Subprogram2

Subprograms

A subprogram is a piece of code that can be used over and over again. If you were coding a calculator, you could make a subprogram that only does adding. Every time you need to do adding, you can use the same subprogram. 

Here is a simple subprogram:

number1=int(input("Enter a number: "))
number2=int(input("Enter another number: "))
def adding(num1, num2):
   total=num1 + num2
   print(total)
adding(num1, num2):

This subprogram explained:
  1. asks a user to enter a number
  2. ask a user to enter another number
  3. A subprogram called "adding" is declated
  4. The first indented line is a variable that adds the two numbers together
  5. The total is displayed
  6. The call switches on the the subprogram and makes it work and passes the parameters into the subprogram

Test you knowledge

Loading Sub programs2

A program with 5 subprograms

Look at the code below
It has 5 subprograms.
4 of them do stuff, while the last one executes all the others.
Look at line 21 because this is where the code begins.