Arithmetic Operators (Mathematical Operators) in Kotlin

Arithmetic Operator Types

Kotlin has 5 Arithmetic Operators similar to Java. They are

• Addition operator (+)
• Subtraction operator (-)
• Multiplication operator (*)
• Division operator (/)
• Modulus operator (%)

Which is also called as Mathematical Operator

Syntax

Addition Operator

var variable_one = variable_two + variable_three

For example,

var sum = 1+2

Subtraction Operator

var variable_one = variable_two - variable_three

For example,

var sub = 10-2

Multiplication Operator

var variable_one = variable_two * variable_three

For example,

var mul = 10*2

Division Operator

var variable_one = variable_two / variable_three

For example,

var div = 10/2

Modulus Operator

var variable_one = variable_two % variable_three

For example,

var mod = 21%4

Arithmetic Operator Example Program in Kotlin

//Arithmetic Operator Example Program in Kotlin
//Operator Kotlin Programs, Basic Kotlin Program

fun main(args: Array<String>) {
    val num1 = 100;
    val num2 = 5

    //Addition
    val addition = num1+num2
    //Subtraction
    val subtraction = num1-num2
    //Multiplication
    val multiplication = num1*num2
    //Division
    val division = num1/num2
    //Modulus
    val modulus = num1%num2

    println("Addition of $num1 and $num2 is : $addition")
    println("Subtraction of $num1 and $num2 is : $subtraction")
    println("Multiplication of $num1 and $num2 is : $multiplication")
    println("Division of $num1 and $num2 is : $division")
    println("Modulus of $num1 and $num2 is : $modulus")
}

Sample Output

Addition of 100 and 5 is : 105
Subtraction of 100 and 5 is : 95
Multiplication of 100 and 5 is : 500
Division of 100 and 5 is : 20
Modulus of 100 and 5 is : 0

How It Works

Here is a step-by-step walkthrough of how the Kotlin program for Arithmetic Operators (Mathematical Operators) in Kotlin runs, line by line:

1. fun main(args: Array<String>) { — defines a function used by the program.
2. val num1 = 100; — declares or assigns a value the program uses.
3. val num2 = 5 — declares or assigns a value the program uses.
4. val addition = num1+num2 — declares or assigns a value the program uses.
5. val subtraction = num1-num2 — declares or assigns a value the program uses.
6. val multiplication = num1*num2 — declares or assigns a value the program uses.
7. val division = num1/num2 — declares or assigns a value the program uses.
8. val modulus = num1%num2 — declares or assigns a value the program uses.

After running it, compare your console output with the Sample Output above. Try changing the values and re-running the program to see how the result changes — experimenting is the fastest way to understand the logic.