Question
REPEAT:
key = INPUT ("Press X to exit")
UNTIL key=="X"
This code uses:
SelectionIterationSequencing
key = INPUT ("Press X to exit")
UNTIL key=="X"
This code uses:
SelectionIterationSequencing
Answers
GPT-4o mini
The code you provided exemplifies **iteration**. Let's break it down based on the three programming constructs you mentioned: **Selection**, **Iteration**, and **Sequencing**.
1. **Iteration**: This is represented by the `REPEAT...UNTIL` loop. The code will continuously prompt the user for input until the condition (`key == "X"`) is met, indicating that iteration is occurring.
2. **Selection**: While the code does not explicitly use conditional statements like `if` or `switch`, the loop is indirectly implementing selection through its exit condition (`key == "X"`). The loop keeps repeating until the selection condition is true.
3. **Sequencing**: The code executes in a linear sequence: it first prompts the user for input and then checks that input against the exit condition. However, the sequencing in this instance is minimal since the primary feature is the iterative loop.
In conclusion, the main structure demonstrated is **iteration**, with a brief mention of selection as part of the loop's exit condition.
1. **Iteration**: This is represented by the `REPEAT...UNTIL` loop. The code will continuously prompt the user for input until the condition (`key == "X"`) is met, indicating that iteration is occurring.
2. **Selection**: While the code does not explicitly use conditional statements like `if` or `switch`, the loop is indirectly implementing selection through its exit condition (`key == "X"`). The loop keeps repeating until the selection condition is true.
3. **Sequencing**: The code executes in a linear sequence: it first prompts the user for input and then checks that input against the exit condition. However, the sequencing in this instance is minimal since the primary feature is the iterative loop.
In conclusion, the main structure demonstrated is **iteration**, with a brief mention of selection as part of the loop's exit condition.