Question

Below is a block of code intended to navigate a robot through a grid of squares. Repeat Until (can_move [right] move_forward [rotate_right] [move_forward] For which of the following grids will the code correctly navigate the robot to a final destination of the grey square and then terminate?

Answer 1

The code will navigate the robot to the grey square if there are no obstacles and the grey square is reachable from the starting position.

Step-by-step explanation:

The block of code provided is an example of a navigation algorithm for a robot in a grid. The code uses a repeat-until loop to check if the robot can move right, and if so, it moves forward, rotates right, and moves forward again. This pattern repeats until the robot reaches the grey square and then terminates.

To determine which grids will correctly navigate the robot and terminate at the grey square, we need to consider the grid's layout. The robot will navigate correctly if there are no obstacles blocking its path to the grey square and the grey square is reachable from the starting position.

For example, if there are walls or obstacles blocking the robot's path to the grey square, the code will not be able to navigate to it. Conversely, if the grey square is not connected to the starting position, the code will also not be able to reach it. Therefore, a grid that has a clear path from the starting position to the grey square, without any obstacles, will allow the code to correctly navigate the robot and terminate at the grey square.