PROCEDURE drawSquare(size):

Question

FOR side FROM 1 TO 4:
forward(size)
turnLeft(90)

This code uses:
SelectionIterationSequencing

Answer 1

The provided code for drawSquare(size) primarily demonstrates the use of Iteration. Here's a breakdown of the key concepts:

1. Iteration: The FOR loop iterates 4 times, allowing the drawing of the four sides of the square. Each iteration corresponds to one side of the square.

2. Sequencing: The instructions within the loop are executed in a specific sequential order for each iteration—first forward(size), then turnLeft(90).

3. Selection: There is no selection (such as if statements or conditionals) present in this code.

Thus, the main control structure represented in the code is Iteration. The code effectively describes a procedure to draw a square by repeating a set of instructions four times, which emphasizes the looping (iteration) aspect without any conditional branching.