Kotlin Basic QuizBy Parvesh Sandila / September 15, 2023 Welcome to your Kotlin Basic Questions Name Email 1. What is the entry point of a Kotlin program? start() function execute() function main() function run() method None 2. 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 15 30 10 25 None 3. 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 }} 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, This program will not compile. None 4. In Kotlin, which collection type represents an ordered list of elements? Set Map Array List None 5. 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 = 0, b = 0 This program will not compile. After swapping: a = 5, b = 10 After swapping: a = 10, b = 5 None 6. What is the output of the following Kotlin program? fun main() { val numbers = arrayOf(1, 2, 3, 4, 5) val sum = numbers.reduce { acc, num -> acc + num } println(sum)} 10 3 120 15 None 7. Given the following Kotlin program, what will be the value of result? val x = 5val y = 3val result = x * y 15 53 8 3 None 8. In Kotlin, what is the purpose of the "fun" keyword? It declares a function It specifies a variable's data type It stands for "funny" It defines a new data type None 9. Which Kotlin feature helps prevent null pointer exceptions? Star operator (*) Arrow operator (->) Elvis operator (?:) Unicorn operator (->>) None 10. What does the following Kotlin program do? fun main() { var n = 10 var factorial = 1 while (n > 0) { factorial *= n n-- } println(factorial)} Prints the first 10 prime numbers. Calculates the sum of the first 10 numbers. Calculates the factorial of 10. Prints the numbers from 10 to 1 in reverse order. None 11. How do you declare a nullable variable in Kotlin? Using the ? operator Using the ! operator Using the * symbol Using the # symbol None 12. In Kotlin, which keyword is used to declare a variable that cannot be reassigned? let const var val None 13. What is the Kotlin equivalent of a "for loop" in other programming languages? foreach loop while loop for-in loop repeat loop None 14. What is the range operator used to create a range of numbers in Kotlin? :: .. -> -- None 15. What is the output of the following Kotlin program? fun main() { var sum = 0 for (i in 1..10) { sum += i } println(sum) } 45 15 55 10 None 1 out of 15
