Question

How to declare variables in Kotlin

Answer 1

fun main(args: Array<String>) {
    val n = 7489
    val pi  = 3.14
    val s = "kotlin"
     
    println(n)
    println(pi)
    println(s)
    
    // n = 100 // kt:10:5: error: val cannot be reassigned
}
 
 
 
/*
run:
 
7489
3.14
kotlin
 
*/

 

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Answer 2

fun main(args: Array<String>) {
    var n = 7489
    var pi  = 3.14
    var s = "kotlin"
     
    println(n)
    println(pi)
    println(s)
    
    n = 100 
    pi = 3.141592
    s = "Kotlin Programming"
    
    println()
    
    println(n)
    println(pi)
    println(s)
}
 
 
 
/*
run:
 
7489
3.14
kotlin

100
3.141592
Kotlin Programming

*/

 

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