Selection & Iteration (Loops)

The variable that does not change the value during execution of program is…………..

• A.  Numeric 
• B. Constant
• C. String
• D. All of the above

A………. displays a list of items from which user can select one or more items  

• A. Combo box
• B. List box
• C. Check box
• D.  Scroll bar

Having someone to work with to speed up and streamline the programming process and someone to help work through challenges.

• advantages of pair programming

• advantages of scrum

• advantages of app inventor

• disadvantages of pair programming

Not communicating well, not sharing code at the end of class, not agreeing on what should be done to the app to make it work.

• advantages of working together

• advantages of pair programming

• disadvantages of pair programming

• disadvantages of app inventor

A game looping while the timer has not run out or looping while the player still has lives left.

• examples of abstraction in a game or app

• examples of iteration in a game or app

• examples of random numbers

• examples of pair programming

Saving your code at checkpoints after it is working correctly is an example of

• saving

• pair programming

• looping

• iterative design

Using loops in algorithms can drastically _______ the amount of time a programmer spend programming.

• reduce

• increase

• loop

• iterate

How does looping decrease the amount of time spent updating a program?

• It doesn't. Looping is more complicated than hard coding events.

• Looping allows you to create random numbers

• Looping is more complicated

• You only have to change the code on one place instead of many

count = 0 while count < userInput count = count + 1 print count

Using the pseudocode above, how many times does the loop execute if userInput = 3?

• 0

• 1

• 2

• 3

count = 0

while count <= userInput

count = count + 1

print count

Using the pseudocode above, how many times does the loop execute if userInput = 3?

• 1

• 2

• 3

• 4