Snap Review 1

Snap Review 1

Multiple Choice

If the user answers "jenny" and "blue" for this program. What will the program say?

• hello jenny, nice to meet you!

• hello blue, nice to meet you!

• nothing

• I am computer.

Ask, Answer in Snap

• Stores in a Snap variable labeled "answer".

• A variable can only store one value at a time.

• Good practice is to store "answer" into another variable that you create that has a descriptive name ("label") immediately after the ask block.

Example of storing answer into custom well named variables

Multiple Choice

Are the outputs of these 2 programs the same or different?

• same

• different

Repeat until vs. forever-if with a stop-all

• Output is the same for both programs, but why is the first program (with repeat until) better?

• repeat until - code is more concise

• repeat until - you can add more blocks at the end (forever loop, cannot add more blocks at the end)

Multiple Choice

What is the output of this program?

• 1_earth, 4_earth

• nothing

• 1_earth, 3_earth, 4_earth

• 2_not_earth

Fun with booleans and conditionals

- and is true if both sides are true

- or is true if either side is true

- variables can be text, a number, or a true/false boolean.

- boolean variables do not need >,<,=,etc. operator

- The 3rd and 4th if statements are logically the same based on De Morgan's laws. That law is Not (A or B) is same as Not A and Not B