Kotlin Operators – Arithmetic, Assignment, Unary, Logical and More

Operators works on operands and used for calculation. For example, + is an operator and when I use it in a expression like this: a+b, it performs addition on operands a & b. In this guide, we will learn types of operators available in Kotlin and how to use them.

Operators in Kotlin are grouped in following categories:
1. Arithmetic operators
2.

1. Arithmetic Operators

• + Addition Operator
• – Subtraction Operator
• * Multiplication Operator
• / Division Operator
• % Modulus Operator

Example of Arithmetic Operators

fun main(args: Array<String>) {

   val num1 = 101.99
   val num2 = 100.50
   var op: Double

   op = num1 + num2
   println("Addition: $op")

   op = num1 - num2
   println("Subtraction: $op")

   op = num1 * num2
   println("Multiplication: $op")

   op = num1 / num2
   println("Division: $op")

   op = num1 % num2
   println("Modulus: $op")
}

Output:

Addition: 202.49
Subtraction: 1.4899999999999949
Multiplication: 10249.994999999999
Division: 1.014825870646766
Modulus: 1.4899999999999949

The Addition operator (+) is also used for the string concatenation. You can read about it here:
String Concatenation in Kotlin

Note: This guide is incomplete. More content is going to be added soon.