PCNWLab-Types/pset1.js at master · mottaquikarim/PCNWLab-Types · GitHub

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/******************
PROBLEM 1:

What are the types of the following expressions and what do they evaluate to, and why?

-> 17
-> 1 + 2 * 3 + 4
-> 800 / 80 / 8
-> 400 > 200
-> 1 !== 1
-> true || false
-> true && false
-> 20 % 6
-> 'a' + 'b'

******************/


/******************
PROBLEM 2:

What will the following return? Why?

-> typeof 4
-> typeof 'hello'
-> typeof true
-> 2 === 1 || 3 === 4

******************/


/******************
PROBLEM 3:

Create a truth table for the expression A || B.

For reference, here is a truth table for the expression A && B:

|   A   |   B   | A && B|
| true  | true  | true  |
| false | true  | false |
| true  | false | false |
| false | false | false |


******************/


/******************
PROBLEM 4:

Create a truth table for the expression !A && !B.

For reference, here is a truth table for the expression A && !B:

|   A   |   B   |   !B   | A &&!B|
| true  | true  | false  | false |
| false | true  | false  | false |
| true  | false | true   | true  |
| false | false |  true  | false |

******************/


/******************
PROBLEM 5:

Write a step-by-step evaluation for the following expression (remember order of operations): 2 + 3 * 2 + 1.

For reference, here is a exp of a step-by-step evaluation:
1 + 2 + 3 + 4
    3 + 3 + 4
        6 + 4
           10


******************/


/******************
PROBLEM 6:

Write a step-by-step evaluation for the following expression (remember order of operations): 4 / 2 + 8 / 4.


******************/


/******************
PROBLEM 7:

Write a step-by-step evaluation for the following expression: 'ca' + 'ter' + 'pi' + 'llar'.


******************/


/******************
PROBLEM 8:

Write a step-by-step evaluation for the following expression: 2 * 4 === 8 && 'car' + 'pool' === 'carpool'.


******************/