Ternary operator usage in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

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

Ruby

result = number % 2 == 0 ? [1] : 'odd'

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

A'even'

B'odd'

C'zero'

D'none'

Attempts:

3 left

💡 Hint

Common Mistakes

Putting 'odd' before the colon instead of 'even'.

Forgetting quotes around the string.

The ternary operator checks if number is divisible by 2. If true, it assigns 'even', else 'odd'.

2fill in blank

medium

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

Ruby

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

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

A'child'

B'adult'

C'teen'

D'senior'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'child' or 'teen' instead of 'adult'.

Confusing the true and false parts.

If age is 18 or more, the ternary operator assigns 'adult', else 'minor'.

3fill in blank

hard

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

Ruby

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

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

Atrue

Bpositive

Cnum

D'positive'

Attempts:

3 left

💡 Hint

Common Mistakes

Missing quotes around 'positive'.

Using a variable name instead of a string.

The true part must be a string 'positive' with quotes, not a bare word.

4fill in blank

hard

Fill both blanks to assign 'even' if n is divisible by 2, else 'odd'.

Ruby

result = n % 2 [1] 0 ? 'even' : [2]

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

A==

B!=

C'odd'

D'even'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '=='.

Swapping 'even' and 'odd' in the false part.

The condition checks if n % 2 equals 0. If true, 'even' else 'odd'.

5fill in blank

hard

Fill all three blanks to assign 'positive', 'negative', or 'zero' based on the value of val.

Ruby

label = val > 0 ? [1] : val < 0 ? [2] : [3]

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

A'positive'

B'negative'

C'zero'

D'none'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of conditions.

Forgetting quotes around strings.

Nested ternary checks val > 0 for 'positive', val < 0 for 'negative', else 'zero'.