Lesson 17: While Loops in Farm Flashcard

Front

What is a "while loop" used for in programming?

Back

To execute a block of code as long as a condition is true

Front

Which of the following is a basic component of a while loop? A condition that is always false, A condition that is checked before each iteration, A function call, A variable declaration

Back

A condition that is checked before each iteration

Front

In a while loop, what is the purpose of updating the condition variable inside the loop?

Back

To eventually make the condition false and exit the loop

Front

A farmer uses a while loop to water plants until they are fully grown. If the condition to check is `plantHeight < desiredHeight`, what should the farmer do inside the loop?

Back

Increase the plant height

Front

Why is it important to have a condition that eventually becomes false in a while loop?

Back

To ensure the loop terminates

Front

A farmer wants to plant seeds in a row until the row is full. Which of the following while loop conditions is appropriate if `currentRow` is the number of seeds planted and `rowCapacity` is the total capacity? Options: `while currentRow > rowCapacity`, `while currentRow < rowCapacity`, `while currentRow == rowCapacity`, `while currentRow != rowCapacity`

Back

`while currentRow < rowCapacity`

Front

If a farmer uses a while loop to water plants and the condition is `soilMoisture < 5`, what should be done inside the loop to ensure the plants are watered correctly?

Back

Increase soil moisture

Front

A while loop is used when you want to loop for an unknown number of times, and possibly forever.

Back

You want to loop for an unknown number of times, and possibly forever.

Front

When this program is run, the last pumpkin is not harvested. Why? (17-6)

Back

You should have moved the pick block after the forward block

Front

How would you describe a while loop?

Back

Check whether the condition is true; if it is true, then keep repeating until the condition is false.

Answer explanation

A `while` loop keeps repeating a block of code as long as the condition evaluates to a true value.