You want to write a Kotlin program that prints all command-line arguments passed to it. Which main function signature and code snippet is correct?

hard📝 Application Q15 of 15

Kotlin - Basics and JVM Runtime

Afun main(args: List<String>) { args.forEach { println(it) } }

Bfun main(args: String) { for (arg in args) println(arg) }

Cfun main() { for (arg in args) println(arg) }

Dfun main(args: Array<String>) { for (arg in args) println(arg) }

Step-by-Step Solution

Solution:

Step 1: Identify correct main function parameter type
Main function must accept Array<String> to receive command-line arguments.
Step 2: Check code to print each argument
fun main(args: Array) { for (arg in args) println(arg) } uses a for loop over args correctly and prints each argument.
Step 3: Evaluate other options
fun main(args: String) { for (arg in args) println(arg) } uses wrong parameter type; C lacks args parameter; D uses List which is not standard for main.
Final Answer:
fun main(args: Array) { for (arg in args) println(arg) } -> Option D
Quick Check:
Main args = Array + loop print [OK]

Quick Trick: Main args must be Array to access command-line inputs [OK]

Common Mistakes:

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