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Kotlin program to calculate the sum of natural numbers

Kotlin | Sum of natural numbers: Here, we are going to learn how to calculate the sum of natural numbers in Kotlin programming language? Submitted by IncludeHelp, on April 24, 2020

Kotlin - calculate the sum of natural numbers

Given a number number, and we have to calculate the sum of all natural numbers from 1 to number.

Example:

Input:
number = 15

Output:
120

Program to calculate the sum of natural numbers in Kotlin

package com.includehelp.basic

import java.util.*

//Main Function entry Point of Program
fun main(args: Array<String>) {
    //Input Stream
    val scanner = Scanner(System.`in`)

    //input integer number
    print("Enter Number  : ")
    val number: Int = scanner.nextInt()

    var sum=0

    //Iterate through loop to calculate sum
    for(i in 1..number){
        sum+=i
    }

    //Print Sum
    println("Sum of All Natural Numbers up to $number are : $sum")
}

Output

Run 1:
Enter Number  : 15
Sum of All Natural Numbers up to 15 are : 120
---
Run 2:
Enter Number  : 99
Sum of All Natural Numbers up to 99 are : 4950
---
Run 3:
Enter Number  : 456
Sum of All Natural Numbers up to 456 are : 104196