Variables: named storage locations

A variable is a named location where the program stores a value. poäng = 0 creates a variable called poäng with the value 0. poäng = poäng + 1 retrieves the current value, adds 1, and saves the result back.

Without variables, a system cannot remember status, counts, or progress over time.

Follow the variable:

liv = 3
liv = liv − 1     # 2
liv = liv − 1     # 1
liv = liv + 5     # 6

When you assign a new value, the old one is replaced. The variable has exactly one value at any given moment.

The name is not critical for the computer, but it is crucial for readability: poäng is clearer than p when you review the code later.