Logical operators in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if both conditions are true.

Swift

let isSunny = true
let isWarm = true
if isSunny [1] isWarm {
    print("Let's go outside!")
}

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

A==

B||

C!

D&&

Attempts:

3 left

💡 Hint

Common Mistakes

Using || instead of && causes the condition to be true if either is true.

The && operator checks if both conditions are true.

2fill in blank

medium

Complete the code to check if at least one condition is true.

Swift

let hasUmbrella = false
let isRaining = true
if hasUmbrella [1] isRaining {
    print("You can go outside.")
}

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

A||

B&&

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using && instead of || requires both conditions to be true.

The || operator means 'or' and returns true if at least one condition is true.

3fill in blank

hard

Fix the error in the code to negate the condition correctly.

Swift

let isWeekend = false
if [1]isWeekend {
    print("Time to relax!")
}

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

A!

B&&

C||

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using == instead of ! does not negate the value.

The ! operator negates the Boolean value, making false become true.

4fill in blank

hard

Fill both blanks to check if the number is between 10 and 20 (inclusive).

Swift

let number = 15
if number [1] 10 [2] number <= 20 {
    print("Number is between 10 and 20.")
}

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

A>=

B<

C&&

D||

Attempts:

3 left

💡 Hint

Common Mistakes

Using || instead of && allows numbers outside the range.

Use >= to check if number is at least 10, and && to combine conditions.

5fill in blank

hard

Fill all three blanks to check if a character is a vowel (a, e, i, o, u).

Swift

let char: Character = 'e'
if char == 'a' [1] char == 'e' [2] char == 'i' [3] char == 'o' || char == 'u' {
    print("It's a vowel.")
}

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

A||

B&&

Attempts:

3 left

💡 Hint

Common Mistakes

Using && requires all conditions to be true, which is impossible here.

Use || to check if the character matches any vowel.