3. Variables Pt. 1

  • Variables are names we attach spaces in the computer memory where we can store numbers, characters and strings
  • Computer memory is like a huge filing cabinet
  • Each time we put something into the cabinet, we label it so we can find it again later
  • I might call it x, i or total
  • Make sure the variable has a suitable name with no spaces
  • Use CamelCase, no spaces or reserved words like print
x = 20
y = 40.5
z = x + y

messageA = “Hello”
messageB = “World”
messageC = messageA + messageB

Tasks

  1. Assign some variables using the code above
  2. Print out all the variables using the print() function
  3. Remember, you don’t need speech marks “” to print variables!
  4. Save and label your code

Extension

Try setting and combining different variables. What happens when you try to add text and a number?