If-else expression assignment in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign the maximum of two numbers to max.

Kotlin

val max = if (a > b) [1] else b

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

Aa + b

Ba

C0

Db

Attempts:

3 left

💡 Hint

Common Mistakes

Using b in the if part instead of a.

Trying to use statements instead of expressions.

The if-else expression returns a if a is greater than b, otherwise b.

2fill in blank

medium

Complete the code to assign a message based on the score.

Kotlin

val message = if (score >= 50) [1] else "Try again"

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

A"Incomplete"

B"Failed"

C"Excellent"

D"Passed"

Attempts:

3 left

💡 Hint

Common Mistakes

Using the else message in the if part.

Forgetting to put quotes around the string.

If the score is 50 or more, the message should be "Passed", otherwise "Try again".

3fill in blank

hard

Fix the error in the if-else expression to assign the correct value.

Kotlin

val result = if (num % 2 == 0) [1] else "Odd"

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

A"Even"

BEven

Cnum

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using Even without quotes causing a compile error.

Returning a boolean or number instead of a string.

The if-else expression must return a string in both cases. "Even" is the correct string for even numbers.

4fill in blank

hard

Fill both blanks to assign a grade based on the score.

Kotlin

val grade = if (score >= [1]) "A" else if (score >= [2]) "B" else "C"

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

A90

B80

C70

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the thresholds for A and B.

Using thresholds that overlap or are out of order.

The highest grade A is for scores 90 and above, grade B for 80 and above, else C.

5fill in blank

hard

Fill all three blanks to assign a description based on temperature.

Kotlin

val description = if (temp < [1]) "Cold" else if (temp < [2]) "Warm" else [3]

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

A10

B25

C"Hot"

D"Cool"

Attempts:

3 left

💡 Hint

Common Mistakes

Using numbers instead of strings for descriptions.

Mixing up the order of temperature thresholds.

Temperatures below 10 are "Cold", below 25 are "Warm", and 25 or above are "Hot".