Semester 1 Test Review

In programming, what is a function?    

• A set of commands given a name
•  A bug that is causing a code not to work
• A set of directions in correct sequence
• A program created by a code

Which of the following describes the purpose of a loop?

• Loops can allow you to run commands in sequence
• Loops can call a function multiple times instead of just once
• Loops can decompose a problem into smaller parts   
•  Give commands to your program in the correct sequence

How do “for loops” make your code more efficient?

• they allow you to repeat functions without retyping them
• they allow you to combine your commands into a single function
• they allow you to build a code library you can use later
• they let you skip a lot of the annoying grammar rules in code

You _________________ a function by providing a set of commands within the function to tell it what to do.

• run
• define
• command
• call

How do functions make your coding more efficient?

• Allows you to combine commands into one step
• Gives you a way to customize your code your way
• Makes you use more “math” concepts in coding
• Functions make the puzzles way easier

Coding efficiently means to:

• Code the “right answer” in Apple Swift
• Create the shortest and simplest code
• Create your code faster than the rest of the class
• Code with the correct programming gramma

What is the difference between a while loop and a for loop?

• For loops can use conditional statements and while loops cannot
• For loops repeat a set number of times and while loops repeat until their condition is   false
• While loops repeat a set number of times and for loops repeat until their condition    is false
• For loops can be used in a function and while loops cannot

Which of the following is a correct example of a while loop?

• for i in 1…4 {   turnLeft()   moveForward()   toggleSwitch()   }
• while isOnClosedSwitch {   toggleSwitch()   turnLeft()   moveForward()   }
• while i in 1…4 {   toggleSwitch()   turnLeft()   moveForward()   }
• if isOnClosedSwitch {   toggleSwitch()   turnLeft()   moveForward()   }

Which of the following is a correct example of a while loop inside of a function?

• func while switchAndToggle {   if isOnGem {   collectGem()   moveForward()   }   }
• while switchAndToggle {   if isOnGem {   collectGem()   moveForward()   }   }
• func switchAndToggle {   if isOnGem {   collectGem()   moveForward()   }   }
• func collectAndMoveForward {   while isOnGem {   collectGem()   moveForward()   }   }
  

Which of the following is a correct example of a for loop?

• while for i in 1…4 {   moveForward()   collectGem()   }
• func for i in 1…4 {   moveForward()   collectGem()   }
• for i in 1…4 {   moveForward()   collectGem()   }
• while isOnGem {   moveForward()   collectGem()   }