Question

question: 4
what is the output of the following program (assume the user enters florence then fernandez)
let firstname = readline(\what is your first name? \);
let lastname = readline(\what is your last name? \);
let wholename = firstname + lastname;
console.log(wholename);

○ fernandez florence

○ florence
fernandez

○ florencefernandez

○ florence fernandez

question: 5
which of the following choices is a properly formed javascript variable name, meaning it is both legal in the javascript language and considered good style?

○ user_age

○ userage

○ userage

○ user age

Explanation:

Question 4

1. The program first takes the first name as "Florence" (from readLine for first name) and the last name as "Fernandez" (from readLine for last name).
2. Then it concatenates firstName and lastName using the + operator, which in JavaScript for strings just joins them without a space (since there's no space added in the concatenation). So firstName + lastName would be "Florence" + "Fernandez" = "FlorenceFernandez".

1. Option A (user_age): While legal, snake_case is less common for good JavaScript style (camelCase is preferred for variables).
2. Option B (UserAge): PascalCase is typically used for constructors/classes, not regular variables.
3. Option C (userAge): Follows camelCase (starts with lowercase, subsequent words start with uppercase), which is legal and good style for JavaScript variables.
4. Option D (User age): Contains a space, which is invalid for JavaScript variable names (variables can't have spaces).

So the properly formed variable name with good style is userAge.

Answer:

C. FlorenceFernandez

Question 5