Assignment Operators and Augmented Assignment Operators in Kotlin

Definition

• Assignment Operator is nothing but the “equal to - =” operator. This operator assigns a value to a variable.
• Augmented Assignment Operators performs operations and assigns the value to the same variable. There are 5 types of Augmented Assignment Operators. They are
  • Addition and Assignment operator (+=)
  • Subtraction and Assignment operator (-=)
  • Multiplication and Assignment operator (*=)
  • Division and Assignment operator (/=)
  • Modulus and Assignment operator (%=)

Syntax

Assignment Operator

var variable_name1 = value

For example,

var number = 5

Addition and Assignment Operator (Augmented Assignment operator)

var variable_name1 += value

For example,

var number += 5

Subtraction and Assignment Operator (Augmented Assignment operator)

var variable_name1 -= value

For example,

var number -= 5

Multiplication and Assignment Operator (Augmented Assignment operator)

var variable_name1 *= value

For example,

var number *= 5

Division and Assignment Operator (Augmented Assignment operator)

var variable_name1 /= value

For example,

var number /= 5

Modulus and Assignment Operator (Augmented Assignment operator)

var variable_name1 %= value

For example,

var number %= 5

Assignment Operators and Augmented Assignment Operator Example Program in Kotlin

//Assignment Operators and Augmented Assignment Operators Example Program in Kotlin
//Operator Kotlin Programs, Basic Kotlin Program

fun main(args: Array<String>) {
    val num1 = 100;
    val num2 = 5
    
    //Assigning num1 value to addition variable
    var addition = num1

    //Adding num2 to addition variable and assigning result to the addition variable
    addition += num2
    var subtraction = num1

    //Subtracting num2 from subtraction variable and assigning result to the subtraction variable
    subtraction -= num2
    var multiplication = num1

    //Multiplying num2 and multiplication variables and assigning result to the multiplication variable
    multiplication *= num2
    var division = num1

    //Dividing division by num2 variable and assigning result to the division variable
    division /= num2
    //Modulus of modulus variable by num2 variable and assigning result to the modulus variable
    var modulus = num1
    modulus %= num2

    println("addition and assignment of $num1 and $num2 is : $addition")
    println("subtraction and assignment of $num1 and $num2 is : $subtraction")
    println("multiplication and assignment of $num1 and $num2 is : $multiplication")
    println("division and assignment of $num1 and $num2 is : $division")
    println("modulus and assignment of $num1 and $num2 is : $modulus")
}

Sample Output

addition and assignment of 100 and 5 is : 105
subtraction and assignment of 100 and 5 is : 95
multiplication and assignment of 100 and 5 is : 500
division and assignment of 100 and 5 is : 20
modulus and assignment of 100 and 5 is : 0

How It Works

This Kotlin program demonstrates Assignment Operators and Augmented Assignment Operators. It first prepares the data it needs, then performs the core operation step by step, and finally prints the output shown in the Sample Output above.

1. Declare the variables that hold the program’s data.
2. Print the final result to the console so you can compare it with the sample output.

Try changing the input values and re-running the program to see how the output changes — this is the fastest way to understand how the logic behaves.