CodeHS - Unit 5 - Into to Programming with Karel

How can we improve the following program?

function start() {

move();

move();

move();

move();

move();

move();

move();

move();

move();

}

• Break down this program into more functions

• Use a for loop to repeat the move command

• Use a while loop to repeat the move command

• Fix the indentation of this program

How can we teach Karel new commands?

• For loop

• While loop

• Define a new function

• The main function

What is the start function?

• A function that starts.

• It is the main body of a program, where all other functions are called up.

• It is the start of a racing program.

• It is another function like all others that can be written with any definition you want.

What is a "bug" in programming?

• an error in a code

• a scratch on the screen

• something is wrong with the computer

• none of the above

What is a condition in Karel programming?

• The place in code where the program stops running.

• A method that returns a true or false answer. Typically used within a control structure.

• The number of times a program loops.

• What karel does during the program.

What is programming?

• a set of related activities

• someone who knows how to program

• giving the computer a set of commands

• a language where the codes are written in text

Why is 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

Why does a programmer indent their code?

• Helps show the structure of the code.

• Easier for other people to understand.

• A key part of good programming style!

• All of the above

What does the mystery function do?

function mystery() {

while (noBallsPresent()) {

move();

}

}

• 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 a reason we use functions?

• Break down our program into smaller parts.

• Because it is more complex.

• It looks cool and helps the fight against martians!

• Functions are basically Algebra and programmers like Algebra.