Kotlin Basic QuizBy Parvesh Sandila / September 15, 2023 Welcome to your Kotlin Basic Questions Name Email 1. Given the following Kotlin program, what will be the value of result? val x = 5val y = 3val result = x * y 8 15 53 3 None 2. How do you declare a nullable variable in Kotlin? Using the ? operator Using the ! operator Using the * symbol Using the # symbol None 3. What is the output of the following Kotlin program? fun main() { var sum = 0 for (i in 1..10) { sum += i } println(sum) } 55 10 15 45 None 4. What is the Kotlin equivalent of a "for loop" in other programming languages? while loop for-in loop foreach loop repeat loop None 5. What is the range operator used to create a range of numbers in Kotlin? .. -> -- :: None 6. What is the output of the following Kotlin program? fun main() { var a = 5 var b = 10 a = b.also { b = a } println("After swapping: a = $a, b = $b")} After swapping: a = 5, b = 10 After swapping: a = 10, b = 5 After swapping: a = 0, b = 0 This program will not compile. None 7. What is the entry point of a Kotlin program? execute() function start() function main() function run() method None 8. In Kotlin, what is the purpose of the "fun" keyword? It specifies a variable's data type It defines a new data type It declares a function It stands for "funny" None 9. Which Kotlin feature helps prevent null pointer exceptions? Unicorn operator (->>) Arrow operator (->) Elvis operator (?:) Star operator (*) None 10. What is the output of the following Kotlin program? fun main() { var fib1 = 0 var fib2 = 1 for (i in 1..10) { print("$fib1, ") val next = fib1 + fib2 fib1 = fib2 fib2 = next }} This program will not compile. 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, None 11. Given the following Kotlin program, what will be the value of max? val num1 = 10val num2 = 25val num3 = 15val max = if (num1 >= num2 && num1 >= num3) num1else if (num2 >= num1 && num2 >= num3) num2else num3 25 30 10 15 None 12. In Kotlin, which keyword is used to declare a variable that cannot be reassigned? var const val let None 13. How can you define a read-only property in Kotlin? Using the "get" keyword Using the "var" keyword Using the "readonly" keyword Using the "val" keyword None 14. In Kotlin, what keyword is used to declare a function? fun proc method func None 15. In Kotlin, which collection type represents an ordered list of elements? Set Map Array List None 1 out of 15
