Unit 3 Karel Programming Review 2

Front

Which of the following is used to create a loop that executes as long as a condition is true? for, do-while, while, loop

Back

while

Front

Why would we use a while loop instead of a for loop?

Back

we don't know how many times we want to run the loop

Front

Control structure that lets us do either one section of code or another depending on a test.

Back

If/Else Statement

Front

What type of error occurs when the program runs but produces incorrect results?

Back

Logic error

Answer explanation

A logic error occurs when a program runs without crashing but produces incorrect results due to flaws in the algorithm or logic. This distinguishes it from syntax errors, which prevent the program from running, and runtime errors, which cause crashes.

Front

What is the purpose of using an 'if' statement?

Back

To make decisions based on conditions.

Answer explanation

An 'if' statement is used to make decisions based on conditions. It allows the program to execute certain blocks of code only when specific criteria are met, enabling dynamic behavior in the code.

Front

What is a run-time error?

Back

A mistake that occurs during the execution of a program

Answer explanation

A run-time error occurs when a program is running, leading to unexpected behavior or crashes. This distinguishes it from syntax errors, which happen during code writing, and logic errors, which occur when the code runs but produces incorrect results.

Front

Finding and fixing errors in programs

Back

Debugging

Front

Which of the following is not a valid condition to go in an if statement for Karel? ballsPresent(), frontIsClear(), leftIsBlocked(), turnLeft()

Back

turnLeft()

Front

How many total times will Karel move in this program?

Back

5

Front

What condition should be used in this while loop to get Karel to move until there is a wall in the way?

Back

frontIsClear();