Variables are one of the most important aspects of learning to program. Throughout this lesson we’ve covered:
- Assigning & Retrieving Values
- Performing Calculations Using Expressions
- Different Variable Types for Data Types (numeric, string & boolean)
Let’s review:
Variables can be used to track values in a program.
Numeric Variables
We explained that values can be assigned to and retrieved from a variable by using the variable name.
points = 0 print(points)
Expressions
We introduced how expressions can be used to assign calculated values to variables:
high_score = points + 100
Data Types
We explained that your program will have to work with many kinds of data and it is useful to be able to have variables with different types. We introduced some common data types:
- Numbers
- Strings
- Booleans
Well done! You have learned one of the fundamental concepts of programming!
Instructions
This exercise is for review. We’ve allowed for all sorts of variable commands. Try a variety of ways to solving this puzzle, as well as changing the win message.
Hint
- Try changing the
moveDistance
using set or the math operators - Try changing the
goalPositionX
orgoalPositionY
Solution
Set doorLocked to false Set winMessage to Review Complete Subtract 7 from goalPositionX Move Down