Fundamentals of Comp Sci Midterm Review 2021

What is the proper format for a single line comment in Karel?

• 
• // This is a comment

• /* This is a comment

• This is a comment

Which of the following is the correct way to define a turnRight function in Karel?

• 
• 
• 
• 

What makes the following command an invalid Karel command?

turnleft();

• It should end in a colon rather than a semicolon

• The l should be a capital L

• It should start with a capital T

• This command is correct

In this code, how many times is the dance function called and how many times is it defined?

• Called 1 time, defined 1 time

• Called 1 time, defined 3 times

• Called 3 times, defined 1 time

• Called 3 times, defined 3 times

How can we teach Karel new commands?

• For loop

• While loop

• Define a new function

• The start function

Karel starts at Street 1, Avenue 1, facing East in a 5x5 world. What will happen after this code runs?

• Karel will end on Street 1, Avenue 2

• Karel will end on Street 1, Avenue 7

• This code won’t run because of a syntax error

• Karel will crash into a wall

What is wrong with this for loop?

• The for loop uses commas instead of semicolons

• It should say i++ instead of i + 1

• The for loop is correct

What is top down design?

• Top down design is a way of designing your program by starting with the biggest problem and breaking it down into smaller and smaller pieces that are easier to solve.

• Top down design is a way that you can create designs on a computer to put on a web page

• Top down design is a way of designing your programs starting with the individual commands first

• Top down design is a way to use loops and if statements to decompose the problem

What does the mystery function do?

• Karel moves until it is on a ball

• Karel moves once if there is no ball present

• Karel moves until it puts down a ball

• Karel checks if there is no ball on the current spot and then moves once

What is the purpose of an input device?

• To allow the computer to store information or programs.

• To allow the user to give data or information to the computer.

• To allow computers to connect and communicate with other computers.

• To allow the computer to display or communicate the result of a computation.