Question

PROCEDURE drawSquare(size):  FOR side FROM 1 TO 4:     forward(size)     turnLeft(90)This code uses:SelectionIterationSequencing

Answer 1

The code you've provided for the procedure `drawSquare(size)` primarily uses **iteration**.

Here's why:

- **Iteration**: The `FOR` loop iterates four times (from 1 to 4) to draw the four sides of the square. This is a classic example of using a loop to repeat a block of code.

- **Sequencing**: This is also present in the sense that the actions within the loop (the `forward(size)` and `turnLeft(90)`) are executed in a specific order during each iteration. However, sequencing itself is a fundamental concept that is present in most programming constructs.

- **Selection**: This does not appear in the provided code. Selection usually involves conditional statements (like `if` or `switch`), which determine which paths of execution to take based on certain conditions.

In summary, the primary control structure demonstrated in your procedure is **iteration**.