If and if-else statements in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the number is positive.

Swift

let number = 5
if number [1] 0 {
    print("Positive number")
}

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

A==

B>

C<

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' will check for negative numbers.

The condition number > 0 checks if the number is positive.

2fill in blank

medium

Complete the code to print "Even" if the number is divisible by 2.

Swift

let number = 8
if number % 2 [1] 0 {
    print("Even")
}

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

A!=

B<

C>

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' will check for odd numbers instead.

The condition number % 2 == 0 checks if the number is even.

3fill in blank

hard

Fix the error in the if-else statement to print "Adult" if age is 18 or more.

Swift

let age = 20
if age [1] 18 {
    print("Adult")
} else {
    print("Minor")
}

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

A>=

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' will check for ages less than 18, which is incorrect here.

The condition age >= 18 correctly checks if age is 18 or older.

4fill in blank

hard

Fill both blanks to print "Child" if age is less than 13, otherwise "Teen or Adult".

Swift

let age = 10
if age [1] 13 {
    print("Child")
} [2] {
    print("Teen or Adult")
}

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

A<

B>

Celse

Delif

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'elif' instead of 'else' in the second blank causes syntax error.

The first blank uses '<' to check if age is less than 13. The second blank is the keyword else for the alternative case.

5fill in blank

hard

Fill all three blanks to print "Positive", "Negative", or "Zero" based on the value of number.

Swift

let number = 0
if number [1] 0 {
    print("Positive")
} else if number [2] 0 {
    print("Negative")
} [3] {
    print("Zero")
}

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

A>

B<

Celse

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' in the first or second blank causes wrong logic.

The first blank checks if number is greater than zero. The second blank checks if number is less than zero. The third blank is the else keyword for zero.