Functions and Parameters Summative preview

What is the output of the following program?

• 5

  15

• 15

  5

• nothing will print

• 5

What is printed by the following program?

• -7

• 7

• =13

• 13

What will be printed to the screen when the following program is run?

function start(){

println(doubleNumber(doubleNumber(10)));

}

function doubleNumber(x){

var doubledX = 2 * x;

return doubledX;

}

• 20

• 100

• 40

• x

In the following function printThreeTimes:

function printThreeTimes(word){

println(word);

println(word);

println(word);

}

What is the parameter of the function?

• word

  word

  word

• word

• no parameter

• println

What is the minimum number of parameters that must be given when calling the ‘drawCircle’ function?

function drawCircle(radius, x, y, color) {

var circle = new Circle(radius);

circle.setPosition(x, y);

circle.setColor(color);

add(circle);

}

• 1

• 2

• 0

• 4

// This function prints out the area of a rectangle given its base and height function rectangleArea(base, height){

var area = base * height;

println(area);

}

What are the names of the parameters?

• base and height

• length and width

• var area

• println(area)

What is printed by the program?

• 2

  1

  0

• two

  one

  zero

• nothing will print

• 0

  1

  2

is var RADIUS = 35

in the program shown

a LOCAL or GLOBAL variable?

• LOCAL

• GLOBAL

• it isn't a variable

If it’s not a bird and it’s not a plane, it must be Superman.

Will the following function work to find Superman?

function isSuperman(isBird, isPlane){

return !isBird && !isPlane;

}

• Yes it will work

• No it won't work

How many parameters go into the function sum, and how many return values come out of the function sum

function sum(first, second, third){

var result = first + second + third;

println(first);

println(second);

println(third);

return result;

}

• 3 parameters go in,

  1 return value comes out

• 3 parameters go in,

  3 return value comes out

• No parameters go in

• No result comes out