Passing arguments in Android Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a function that takes one argument named name.

Android Kotlin

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

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

Atext

Bmessage

Cinput

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different parameter name than 'name' causes an error because 'name' is used inside the function.

The function parameter must be named 'name' to match the usage inside the function.

2fill in blank

medium

Complete the code to call the function greet with the argument "Alice".

Android Kotlin

greet([1])

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

A"Alice"

Bname

CAlice

D'Alice'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing Alice without quotes causes a variable not found error.

Using single quotes is for characters, not strings.

String arguments in Kotlin must be enclosed in double quotes.

3fill in blank

hard

Fix the error in the function call by passing the correct argument.

Android Kotlin

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

greet([1])

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

A123

B"Bob"

Ctrue

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a number or boolean instead of a string causes a type mismatch error.

The function expects a String argument, so we must pass a string like "Bob".

4fill in blank

hard

Fill both blanks to define a function with two parameters and call it correctly.

Android Kotlin

fun greet([1]: String, [2]: Int) {
  println("Hello, $name! You are $age years old.")
}

greet("Alice", 30)

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

Aname

Bage

Ccount

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using parameter names that do not match the variables used inside the function causes errors.

The parameters must be named 'name' and 'age' to match the print statement and function call.

5fill in blank

hard

Fill all three blanks to create a function with default arguments and call it with one argument.

Android Kotlin

fun greet([1]: String, [2]: Int = [3]) {
  println("Hello, $name! You are $age years old.")
}

greet("Charlie")

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

Aname

Bage

C25

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Not providing a default value for the second parameter causes errors when calling with one argument.

The function has parameters 'name' and 'age' with a default value 25 for age, so calling greet("Charlie") works.