Variable CS Thinking Example 3
Follow the full solution, then compare it with the other examples linked below.
Example 3
easyWhat is the output? SET score = 0. SET score = score + 10. SET score = score + 5. OUTPUT score.
Solution
- 1 Step 1: score starts at 0, then 0 + 10 = 10, then 10 + 5 = 15.
- 2 Step 2: Output: 15.
Answer
The pattern `score = score + value` is called accumulation — it adds to the existing value rather than replacing it.
About Variable
A named container in a program that stores a value, which can be read, updated, or replaced. Variables have a name (identifier), a value (the data stored), and in many languages a type (what kind of data it holds).
Learn more about Variable →More Variable Examples
Example 1 easy
Trace: SET x = 7. SET y = x + 3. SET x = y * 2. OUTPUT x, y.
Example 2 mediumShow how to swap the values of two variables a and b using a temporary variable. Trace with a = 5, b
Example 4 mediumTrace this swap algorithm: SET A = 3. SET B = 8. SET temp = A. SET A = B. SET B = temp. What are A a