Ternary operator in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign 'adult' if age is 18 or more, otherwise 'minor'.

Ruby

status = age [1] 18 ? 'adult' : 'minor'

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

A!=

B>=

C==

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>=' causes wrong classification.

Using '==' only checks for exactly 18, not adults older than 18.

The ternary operator checks if age >= 18. If true, it assigns 'adult', else 'minor'.

2fill in blank

medium

Complete the code to assign 'even' if number is divisible by 2, else 'odd'.

Ruby

result = number.[1](2) == 0 ? 'even' : 'odd'

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

Adiv

Bmod

Cremainder

Dmodulo

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'mod' or 'modulo' which are not Ruby methods.

Using 'div' which returns quotient, not remainder.

In Ruby, number.remainder(2) returns the remainder after division by 2. If it's 0, the number is even.

3fill in blank

hard

Fix the error in the ternary operator to assign 'positive' if num > 0, else 'non-positive'.

Ruby

label = num [1] 0 ? 'positive' : 'non-positive'

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

A>

B=>

C<=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=>' which is a hash rocket, not a comparison.

Using '<=' or '==' which do not match the condition.

The correct comparison operator is > to check if num is greater than zero.

4fill in blank

hard

Fill both blanks to assign 'high' if score is above 80, else 'low'.

Ruby

level = score [1] 80 ? 'high' : '[2]'

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

A>

Bhigh

Clow

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' changes the logic.

Assigning 'high' in the else part causes wrong output.

The condition checks if score > 80. If true, assign 'high', else 'low'.

5fill in blank

hard

Fill all three blanks to create a ternary that assigns the uppercase name if active is true, else lowercase.

Ruby

display_name = active ? name.[1] : name.[2].[3]

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

Aupcase

Bdowncase

Cstrip

Dcapitalize

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'capitalize' instead of 'upcase' or 'downcase'.

Not stripping whitespace in the else part.

If active is true, name.upcase is used. Otherwise, name.downcase.strip is used to clean whitespace.