Repeat-while loop in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a repeat-while loop that prints numbers from 1 to 3.

Swift

var number = 1
repeat {
    print(number)
    number += 1
} while [1]

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

Anumber <= 3

Bnumber < 1

Cnumber == 0

Dnumber > 3

Attempts:

3 left

💡 Hint

Common Mistakes

Using a condition that never becomes false, causing an infinite loop.

Using a condition that is false at the start, so the loop never runs.

The repeat-while loop continues as long as the condition 'number <= 3' is true, printing numbers 1 to 3.

2fill in blank

medium

Complete the code to repeat the loop while the variable 'count' is less than 5.

Swift

var count = 0
repeat {
    print("Count is \(count)")
    count += 1
} while [1]

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

Acount >= 5

Bcount > 5

Ccount == 5

Dcount < 5

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<', which would cause the loop to never run.

Using '==' which only runs if count is exactly 5.

The loop repeats while 'count' is less than 5, printing counts from 0 to 4.

3fill in blank

hard

Fix the error in the repeat-while loop condition to stop when 'value' reaches 10.

Swift

var value = 2
repeat {
    print(value)
    value += 2
} while [1]

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

Avalue > 10

Bvalue < 10

Cvalue <= 10

Dvalue == 10

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' excludes the value 10 from the loop output.

Using '==' only runs the loop if value is exactly 10.

The loop should continue while 'value' is less than or equal to 10 to include 10 in the output.

4fill in blank

hard

Fill both blanks to create a repeat-while loop that prints even numbers from 2 to 8.

Swift

var num = 2
repeat {
    print(num)
    num [1] 2
} while num [2] 8

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

A+=

B-=

C<=

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-=' decreases the number, causing an infinite loop.

Using '>=' in the condition causes the loop to never run.

The loop adds 2 to 'num' each time and continues while 'num' is less than or equal to 8.

5fill in blank

hard

Fill all three blanks to create a repeat-while loop that prints numbers from 10 down to 2, decreasing by 2.

Swift

var n = [1]
repeat {
    print(n)
    n [2] 2
} while n [3] 2

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

A10

B-=

C>=

D+=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+=' instead of '-=' causes the loop to increase and never stop.

Using '<=' in the condition causes the loop to never run.

The loop starts at 10, subtracts 2 each time, and continues while n is greater than or equal to 2.