The problem presents two loops: a 'while' loop and a 'repeat until' loop. We need to determine the final values of the variables `count_x` and `count_y` after the execution of each loop, respectively.
2025/5/6
1. Problem Description
The problem presents two loops: a 'while' loop and a 'repeat until' loop. We need to determine the final values of the variables `count_x` and `count_y` after the execution of each loop, respectively.
2. Solution Steps
First, let's analyze the 'while' loop:
`count_x = 1`
`while count_x <= 10`
` count_x = count_x + 2`
`end while`
The loop starts with `count_x = 1`. The loop continues as long as `count_x` is less than or equal to
1
0. Inside the loop, `count_x` is incremented by 2 in each iteration.
Let's trace the values of `count_x`:
- Initial: `count_x = 1`
- 1st iteration: `count_x = 1 + 2 = 3`
- 2nd iteration: `count_x = 3 + 2 = 5`
- 3rd iteration: `count_x = 5 + 2 = 7`
- 4th iteration: `count_x = 7 + 2 = 9`
- 5th iteration: `count_x = 9 + 2 = 11`
Now `count_x = 11`. The condition `count_x <= 10` (i.e., ) is false, so the loop terminates.
Therefore, the final value of `count_x` is
1
1.
Next, let's analyze the 'repeat until' loop:
`count_y = 1`
`repeat`
` count_y = count_y + 2`
`until count_y <= 10`
The loop starts with `count_y = 1`. The loop executes at least once, and then continues until `count_y` is less than or equal to
1
0. Inside the loop, `count_y` is incremented by 2 in each iteration.
Let's trace the values of `count_y`:
- Initial: `count_y = 1`
- 1st iteration: `count_y = 1 + 2 = 3`
- 2nd iteration: `count_y = 3 + 2 = 5`
- 3rd iteration: `count_y = 5 + 2 = 7`
- 4th iteration: `count_y = 7 + 2 = 9`
- 5th iteration: `count_y = 9 + 2 = 11`
Now `count_y = 11`. The condition `count_y <= 10` (i.e., ) is false, so the loop terminates.
Therefore, the final value of `count_y` is
1
1.
3. Final Answer
The final values of `count_x` and `count_y` are 11 and 11 respectively. So the answer is (4) 11 and 11.