Kotlin Basic Programs

 

1) Program to Add Two Numbers

Code:
fun main(args: Array<String>) { val first: Int = 10 val second: Int = 20 val sum = first + second println("The sum is: $sum") }

2) Find ASCII Value of a Character

Code:
fun main(args: Array) { val c = 'a' val ascii = c.toInt() println("The ASCII value of $c is: $ascii") }

3) Program to Swap Two Numbers using the temporary variable

Code:

fun main(args: Array<String>) { var first = 1.20f var second = 2.45f println("--Before swap--") println("First number = $first") println("Second number = $second") // Value of first is assigned to temporary val temporary = first // Value of second is assigned to first first = second // Value of temporary (which contains the initial value of first) is assigned to the second second = temporary println("--After swap--") println("First number = $first") println("Second number = $second") }

4) Program to Swap Two Numbers Without Using Temporary Variable

Code:
fun main(args: Array<String>) { var first = 12.0f var second = 24.5f println("--Before swap--") println("First number = $first") println("Second number = $second") first = first - second second = first + second first = second - first println("--After swap--") println("First number = $first") println("Second number = $second") }

5) Program To Check a Number is Even or Odd

Code:
import java.util.* fun main(args: Array<String>) { val reader = Scanner(System.`in`) print("Enter a number: ") val num = reader.nextInt() val evenOdd = if (num % 2 == 0) "even" else "odd" println("$num is $evenOdd") }