Turtle Programming - Functions Review

Consider the following incorrect program, which is intended to move the robot around the perimeter of a grid, as indicated by the drawing below. The starting position and direction of the robot is indicated in the diagram.

Line 1: 4 TIMES

Line 2: {

Line 3: MOVE_FORWARD()

Line 4: ROTATE_RIGHT()

Line 5: MOVE_FORWARD()

Line 6: MOVE_FORWARD()

Line 7: MOVE_FORWARD()

Line 8: MOVE_FORWARD()

Line 9: ROTATE_RIGHT()

Line 10: }

Given the options below, which lines should be removed so the program will work as intended?

• Line 3 and Line 4

• Lines 5, 6, 7, 8 and 9

• Line 8 and Line 9

• Line 9

Which of the following is NOT true about functions in programming?

• Functions are reusable programming abstractions.

• Functions help reduce the complexity of writing and maintaining programs.

• Functions cannot make calls to other functions within the same program.

• Once defined, a function can be called many times from different parts of a program.

• Functions help break a problem into logical chunks.

What is one important naming convention of functions?

• A function name should indicate how long the function takes to run.

• Two functions with similar behavior should be given identical names to indicate the relationship between them.

• A function name should be as descriptive as possible to indicate what the function does.

• Function names should be organized alphabetically.

• The function name should begin with a number that indicates the order in which it should be executed.

Which one of the following statements about functions is TRUE?

• A function can change names over the course of a program.

• Code can be added or removed dynamically from a function while the program is running.

• Functions can be called using different names depending on where in the program they are called.

• Two functions can be given identical names as long as their code is identical.

• Two functions in a single program can have different names but contain identical code.

A piece of code you can use over and over again

• Function
• Abstraction
• Non-Function

Which of the following will call the function drawStar?

• drawStar

• drawStar();

• function drawStar (){

  for(var i=0; i <5; i++) {moveForward(100); turnLeft(36):}}

• function drawStar;

• function drawStar();

Why are parameters useful when programming?

• Parameters determine the number of times the function will run.

• Parameters allow for more flexible, generalized behaviors in functions.

• Parameters are useful for teams of programmers because they help define the boundaries of the problem they are trying to solve.

• Parameters change the order of operations within a function.