Kotlin Addition

Kotlin Addition Operator

Kotlin Addition Operator returns the sum of given left operand and right operand.

Syntax

The syntax to use Arithmetic Addition operator is

n1 + n2

where

  • n1 is the left operand
  • + is the symbol used for Addition operator
  • n2 is the right operand

Return Value

The above expression returns the sum of the two given values. The data type of the return value depends on the given values. If given values are of different data types, then the resulting would be the higher data type (data type that can allocate larger memory).

Chaining Addition Operator

We can also chain the operator to add more than two numbers in a single expression, as shown in the following.

n1 + n2 + n3 + n4

You can add as many numbers in a single expression as you would like by chaining the Addition operator.

Examples

Addition of 4 and 6

In the following program, we take two variables: n1, and n2 with the values 4 and 6 respectively; and find their sum.

Kotlin Program

fun main() {
    var n1 = 4
    var n2 = 6

    val result = n1 + n2
    println("n1 = $n1\nn2 = $n2\nn1 + n2 = $result")
}

Output

n1 = 4
n2 = 6
n1 + n2 = 10

Addition of more than two numbers in a single expression

In the following program, we take four integer variables: n1, n2, n3, and n4, and find the sum of the integer values in them.

Kotlin Program

fun main() {
    var n1 = 4
    var n2 = 6
    var n3 = -2
    var n4 = 7

    val result = n1 + n2 + n3 + n4
    println("n1 + n2 + n3 + n4 = $result")
}

Output

n1 + n2 + n3 + n4 = 15

Addition of 3.14 and 2.1

In the following program, we find the sum of floating point numbers.

Kotlin Program

fun main() {
    var n1 = 3.14
    var n2 = 2.1

    val result = n1 + n2
    println("n1 = $n1\nn2 = $n2\nn1 + n2 = $result")
}

Output

n1 = 3.14
n2 = 2.1
n1 + n2 = 5.24