Question

multiple choice 1 point
which of the following is the correct way to define a turnright function in karel?
turnright function() {
turnleft();
turnleft();
turnleft();
}
function turnright() {
turnleft();
turnleft();
turnright();
}
function turnright {
turnleft();
turnleft();
turnleft();
}
function turnright() {
turnright();
turnleft();
}
clear my selection
multiple choice 1 point
whats wrong with this code?
function main() {
move();
go();
go();
}
function go() {
move();
move();
}
function move() {
move();
move();
}
main();
the go function is called twice
the go function has been defined twice
the go function has a syntax error
it is not a command that karel understands
clear my selection
multiple choice 1 point
in the following code, what would be a good post - condition to write?
/* precondition: karel is on a spot with a tennis ball facing east

• post - condition:....

*/
function gettennisball() {
pickballs();
move();
turnright();
}
karel is on a spot with a tennis ball facing north
karel is facing east
karel is on the same position but on top of a ball
karel ends one spot above a tennis ball facing east
clear my selection

Explanation:

Question 10:

In Karel, to define a turnRight function, since turning right is equivalent to turning left three - times, the correct way is to call turnLeft() three times within the function definition. The correct syntax for defining a function in Karel also requires parentheses after the function name.

Question 11:

The go function is called twice within the main function, which is not an error in terms of function definition. However, move() is called twice in the go function and move() is not a Karel - recognized command.

Question 12:

In the given gotToNight function, after executing the code (turn left, move, turn right), Karel will end up one spot above a tennis ball facing East.

Answer:

1. function turnRight() {

turnLeft();
turnLeft();
turnLeft();
}

1. The go function has a command that Karel doesn't understand
2. Karel ends one spot above a tennis ball facing East.