Function declaration syntax in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a function named greet.

Kotlin

fun [1]() {
    println("Hello!")
}

Drag options to blanks, or click blank then click option'

AsayHello

BprintMessage

Chello

Dgreet

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than requested.

Forgetting to write the function name after fun.

The function name should be greet as specified.

2fill in blank

medium

Complete the code to declare a function that returns an Int value 5.

Kotlin

fun getNumber(): [1] {
    return 5
}

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AString

BDouble

CInt

DBoolean

Attempts:

3 left

💡 Hint

Common Mistakes

Using String or other types instead of Int.

Omitting the return type when the function returns a value.

The function returns an integer, so the return type should be Int.

3fill in blank

hard

Fix the error in the function declaration to accept a String parameter named name.

Kotlin

fun greet([1]: String) {
    println("Hello, $name!")
}

Drag options to blanks, or click blank then click option'

Agreeting

Bname

CName

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different parameter name than used inside the function.

Capitalizing the parameter name incorrectly.

The parameter name should be name to match the usage inside the function.

4fill in blank

hard

Fill both blanks to declare a function that takes two Int parameters and returns their sum.

Kotlin

fun add([1]: Int, [2]: Int): Int {
    return a + b
}

Drag options to blanks, or click blank then click option'

Aa

Bx

Cb

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Using parameter names that don't match the return statement.

Swapping the order of parameters.

The parameters should be named a and b to match the return statement.

5fill in blank

hard

Fill all three blanks to declare a function that returns a greeting message with the given name.

Kotlin

fun greet([1]: String): [2] {
    return "Hello, " + [3]
}

Drag options to blanks, or click blank then click option'

Aname

BString

DInt

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter or return types.

Using a different variable name than the parameter.

The function takes a parameter name of type String and returns a String greeting using name.