Local variables and naming conventions in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign the value 10 to a local variable named count.

Ruby

count = [1]

Drag options to blanks, or click blank then click option'

ACount

B"10"

Cten

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers, which makes them strings.

Starting variable names with uppercase letters, which makes them constants.

The local variable count is assigned the integer value 10. Using quotes would make it a string, and variable names are case-sensitive.

2fill in blank

medium

Complete the code to print the value of the local variable named total.

Ruby

total = 25
puts [1]

Drag options to blanks, or click blank then click option'

Atotal

BTotal

C"total"

DTOTAL

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase letters which refer to constants, not local variables.

Using quotes which print the string instead of the variable's value.

Variable names are case-sensitive. The local variable is total in lowercase, so we use total to print its value.

3fill in blank

hard

Fix the error in the code by completing the variable name correctly.

Ruby

user_name = "Alice"
puts [1]

Drag options to blanks, or click blank then click option'

AUserName

BuserName

Cuser_name

Dusername

Attempts:

3 left

💡 Hint

Common Mistakes

Changing the case or removing underscores from variable names.

Using camelCase instead of snake_case for local variables.

The variable is named user_name with an underscore and all lowercase letters. Ruby is case-sensitive and exact with variable names.

4fill in blank

hard

Fill both blanks to create a local variable named age and assign it the value 30.

Ruby

[1] = [2]

Drag options to blanks, or click blank then click option'

Aage

B30

C"30"

DAge

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase letters for variable names.

Putting numbers inside quotes, making them strings.

The local variable age is assigned the integer value 30. Variable names start with lowercase letters and numbers are written without quotes.

5fill in blank

hard

Fill all three blanks to create a local variable named full_name and assign it the string "John Doe".

Ruby

[1] = [2] + " " + [3]

Drag options to blanks, or click blank then click option'

AFullName

B"John"

C"Doe"

Dfull_name

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase letters for variable names.

Forgetting quotes around strings.

Not adding spaces between names.

The local variable full_name is assigned by joining two strings with a space. Variable names start lowercase, and strings are in quotes.