Kotlin - Variables and Type System
What will be the output of the following Kotlin code?
val x = 5
val y = 10
println("Sum: ${x + y}")What will be the output of the following Kotlin code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Evaluate the expression inside string template
The expression ${x + y} calculates the sum of 5 and 10, which is 15.Step 2: Understand string output
The println prints "Sum: " followed by the result of the expression, so output is "Sum: 15".Final Answer:
Sum: 15 -> Option CQuick Check:
Expression inside ${} is evaluated [OK]
Quick Trick: Expressions inside ${} are calculated before printing [OK]
Common Mistakes:
MISTAKES- Printing expression as literal text
- Concatenating variables without evaluation
- Confusing string concatenation with template evaluation
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