Intro to CS Unit 3

The picture is an example of...

• Loop

• Variable

• Conditional Statement

• Condition

The picture is an example of...

• Loop

• Variable

• Conditional Statement

• Condition

The picture is an example of...

• Loop

• Variable

• Conditional Statement

• Condition

All of the following are characteristics of abstraction EXCEPT for:

• Efficiency

• Generalization

• Detail Removal

• Black Box

Suppose you had to write a SNAP program which asked a user to enter a number. If the user enters a valid number, the program will print out the number. If the user enters something other than a number (such as "dog" or "cat"), the program will keep asking the user for a number until they enter a valid number.

What type of loop block should you use to make sure the program keeps prompting the user until they enter a valid number?

• forever

• if - then - else

• repeat until

• repeat __ times

What will the following script do if the green flag is pressed and the user clicks on the left arrow key 4 times and then the right arrow key 8 times? Note, there is a variable called "ahead".

• The sprite will travel 40 steps behind of the mouse

• The sprite will move exactly where the mouse moves

• The sprite will not move

• The sprite will travel 40 steps ahead of the mouse

Removing the specifics that are not relevant in a given context.

• Abstraction

• Detail Removal

• Generalization

• Procedural Decomposition

Reducing the complexity of an algorithm or process by focusing on the important parts.

• Abstraction

• Detail Removal

• Generalization

• Procedural Decomposition

Combining a group of related concepts or processes into a single category.

• Abstraction

• Detail Removal

• Generalization

• Procedural Decomposition

Breaking a problem down into smaller sub-tasks, usually to increase readability and/or maintainability.

• Abstraction

• Detail Removal

• Generalization

• Procedural Decomposition