[Solved] Identify the error in this Kotlin function declaration:fun greet(name: String = "User", age: Int) { println("Hello, $name! You are $age years old.") } | Kotlin

Kotlin - Functions

Identify the error in this Kotlin function declaration:

fun greet(name: String = "User", age: Int) {
    println("Hello, $name! You are $age years old.")
}

ACannot use default values with String parameters.

BDefault parameter must be last or followed by named arguments.

CFunction must return a value if default parameters are used.

DNo error, function is correct.

Step-by-Step Solution

Solution:

Step 1: Check parameter order rules
In Kotlin, parameters with default values should be placed after parameters without default values, or you must use named arguments when calling.
Step 2: Analyze given function
Here, name has a default but comes before age which has no default. This causes a problem when calling without named arguments.
Final Answer:
Default parameter must be last or followed by named arguments. -> Option B
Quick Check:
Default parameters after non-default or use named args [OK]

Quick Trick: Place default parameters after non-default ones [OK]

Common Mistakes:

MISTAKES

Master "Functions" in Kotlin

9 interactive learning modes - each teaches the same concept differently

More Kotlin Quizzes

Identify the error in this Kotlin function declaration: