OO e Kotlin

Which keyword do you use to define a function in Kotlin?

• fun

• func

• function

• main

Which of the following do you need to create a Kotlin program that prints a line of text?

• comment describing what your program does

• a main() function

• curly braces {} around the instructions to the system

• 
  a call to print() or println()

What do you expect this Kotlin code to do?

• Print one line of text

• Print two lines of text

• Print three lines of text

• Print two lines of text separated by a blank line

How would you modify this main() function so that it prints a 6-layer cake for someone's 4th birthday?

• 
  Set val age to 6, set val layers to 4

• Set val age to "4", set val layers to "6"

• Set val age to 4, set val layers to 6

• 
  Leave the code as-is

Which of these options correctly calls the function, below, and passes it valid input arguments?

• createMessage("Amy", "Australia", 20)

• createMessage("Evan", England, 9)

• 
  createmessage("Tom", "Thailand", “40”)

• createMessage(Heather, “Haiti”, 7)

Which of the following is a difference between a class and an instance?

• You can think of a class as a blueprint and an instance as the actual “thing".

• A class is like architectural plans for a bridge, and the Golden Gate bridge an instance of those plans.

• 
  A class is for defining categories of "things", while instances are for defining their properties.

• 
  You can create multiple instances from a class, but you can't create classes from instances.

Which of the following is NOT a way for creating a comment in Kotlin?

• Add // at the beginning of or inside a line and anything after that // is considered a comment.

• Put /* or /** to start a block comment, and end it with */.

• 
  Use // to turn the rest of a function into a comment.

• 
  Use /* to start a comment that is one line long.

Which of the following are Kotlin data types?

• 
  Num

• 
  Int

• String

• Boolean

Which of the following are Kotlin data types?

• 
  Num

• 
  Int

• String

• Boolean

Which of the following are valid keywords used in conditional statements in Kotlin?

• 
  if, else

• 
  if, then, stop

• when

• 
  repeat, finish