3.2 Subroutines

Define a subroutine

A set of instructions which execute a commonly used task.

What is the difference between a procedure and a function?

A function returns a value but a procedure does not

How do you write a subroutine in pseudo-code?(add a and b)

SUBROUTINE add(a, b)
result ← a + b
OUTPUT result
ENDSUBROUTINE
#this is a procedure

Write a subroutine with a return value in python. (area)

def area(l, w):
area = l * w
return area
print(area(5, 6)
#prints out 30

How do you call subroutine without a return value? (PC, PY)

add(3, 4) #it is the same for both

How do you call a subroutine with a return value?

answer ← area(l, w)
answer = area(l, w)