2. Variables

• Variables are references to memory regions that you define to use in the program.

• The variables F and C from the previous example are references to memory regions.

• The variables F and f are different, just as C and c are.

• "F" or "C" are not variables.

2.1. Variables with defined and undefined values

• You can only use the content of a variable if it already has a defined value.

• If you use a variable that has no defined value or is undefined, it would result in an error like the following.

Save & RunResetLoad History

4

 

1

x = 42

2

print(x)

3

print(y)

4

​

Activity: 2.1.1 ActiveCode (ac_l40_2_en)

You have attempted 1 of 2 activities on this page