What happens when the command 'turnLeft();' is executed multiple times?

What happens when the command 'turnLeft();' is executed multiple times?

• A. Karel stays in the same direction
• B. It rotates Karel left each time, up to 360 degrees
• C. Karel turns right instead
• D. It causes an error in the program

Answer: (B)

When the command 'turnLeft();' is executed multiple times, Karel rotates left by 90 degrees with each execution. Since there are a total of four possible turns Karel can make (up to a full 360 degrees), executing 'turnLeft();' four times would return Karel to facing the original direction. Therefore, if Karel turns left once, it faces a new direction, then after the second turn, it faces a direction 180 degrees opposite, and the fourth turn brings Karel back to the original direction. Each of these operations aligns with the understanding of how rotation works in a 360-degree environment. Thus, the statement that it rotates Karel left each time, up to 360 degrees, captures the behavior of executing the command repeatedly. The additional context about the other choices clarifies misunderstandings: Karel will not stay in the same direction unless it turns a total of four times, and it will not turn right or cause an error simply by executing 'turnLeft();' multiple times.

When the command 'turnLeft();' is executed multiple times, Karel rotates left by 90 degrees with each execution. Since there are a total of four possible turns Karel can make (up to a full 360 degrees), executing 'turnLeft();' four times would return Karel to facing the original direction. Therefore, if Karel turns left once, it faces a new direction, then after the second turn, it faces a direction 180 degrees opposite, and the fourth turn brings Karel back to the original direction. Each of these operations aligns with the understanding of how rotation works in a 360-degree environment.

Thus, the statement that it rotates Karel left each time, up to 360 degrees, captures the behavior of executing the command repeatedly. The additional context about the other choices clarifies misunderstandings: Karel will not stay in the same direction unless it turns a total of four times, and it will not turn right or cause an error simply by executing 'turnLeft();' multiple times.