[Solved] What is the problem with this Kotlin code?val grade = if (score >= 90) "A" — Ans: Missing else branch causes a compilation error | Kotlin

Kotlin - Control Flow as Expressions

What is the problem with this Kotlin code?

val grade = if (score >= 90) "A"

AThe condition should use <code>></code> instead of <code>>=</code>

BMissing <code>else</code> branch causes a compilation error

CThe variable <code>grade</code> should be declared as <code>var</code>

DThe string "A" should be enclosed in single quotes

Step-by-Step Solution

Solution:

Step 1: Analyze the if expression
The if expression lacks an else branch, which is mandatory when used as an expression.
Step 2: Understand Kotlin's requirements
Without else, the compiler cannot determine the value for cases when the condition is false.
Final Answer:
Missing else branch causes a compilation error -> Option B
Quick Check:
Check if all if expressions have else [OK]

Quick Trick: If used as expression must have else branch [OK]

Common Mistakes:

MISTAKES

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