What will be the output of the following Swift code?

medium📝 Predict Output Q4 of 15

Swift - Loops

var x = 1
repeat {
    print(x)
    x += 1
} while x < 4

ANo output

B1 2 3

C2 3 4

D1 2 3 4

Step-by-Step Solution

Solution:

Step 1: Trace the loop iterations
Initially, x = 1. The loop prints 1, then increments x to 2. Condition x < 4 is true, so loop repeats printing 2 and 3.
Step 2: Check when loop stops
After printing 3, x becomes 4. Condition x < 4 is false, so loop stops. Numbers printed: 1, 2, 3.
Final Answer:
1 2 3 -> Option B
Quick Check:
Output matches printed values 1 to 3 [OK]

Quick Trick: repeat-while runs until condition is false after loop body [OK]

Common Mistakes:

Master "Loops" in Swift

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Swift Quizzes