The first problem asks us to find the value of the variable $Z$ after the execution of the given pseudocode. The pseudocode involves a `while` loop. The second problem asks us to find the output value of $a$ after the execution of the given pseudocode, which contains a `repeat` loop.
2025/3/17
1. Problem Description
The first problem asks us to find the value of the variable after the execution of the given pseudocode. The pseudocode involves a `while` loop.
The second problem asks us to find the output value of after the execution of the given pseudocode, which contains a `repeat` loop.
2. Solution Steps
Problem 38:
We trace the execution of the pseudocode:
- Initially, and .
- The `while` loop condition is , which is true initially.
- Inside the loop:
- , so .
- , so .
- , so .
- The loop condition becomes , which is false.
- The `while` loop terminates.
- `Display Z` outputs the value of , which is
5.
Problem 39:
We trace the execution of the pseudocode:
- Initially, and .
- The `repeat` loop begins:
- , so .
- , so .
- The `until` condition is , which means the loop continues until becomes greater than
3. Currently, $c = 3$, so the condition is false, and the loop continues.
- , so .
- , so .
- The `until` condition is , which is , which is true.
- The `repeat` loop terminates.
- `Print a` outputs the value of , which is
1
7.
3. Final Answer
Problem 38: 2) 5
Problem 39: 2) 17