Why operators are functions in Kotlin - See It in Action

Why operators are functions in Kotlin

📖 Scenario: Imagine you want to add two numbers or combine two strings in Kotlin. Kotlin treats these operations as functions behind the scenes. This project will help you see how operators like + are actually functions you can call yourself.

🎯 Goal: You will create two variables, define a helper variable, use the plus function to add values, and then print the result. This shows how operators are just functions in Kotlin.

📋 What You'll Learn

Create two variables with exact values

Create a helper variable to hold the sum

Use the plus function to add the two variables

Print the final result

💡 Why This Matters

🌍 Real World

Understanding that operators are functions helps you read Kotlin code better and write your own custom operations.

💼 Career

Many Kotlin jobs require understanding how operators work under the hood to write clean and efficient code.

1

Create two variables

Create two integer variables called num1 and num2 with values 10 and 20 respectively.

Kotlin

// Your code here

Need a hint?

Use val to create variables and assign the exact numbers.

2

Create a helper variable

Create a variable called sum and set it to 0 to prepare for storing the result.

Kotlin

val num1 = 10
val num2 = 20
// Your code here

Need a hint?

Use var because you will change the value later.

3

Use the plus function

Use the plus function to add num1 and num2, then assign the result to sum. Write sum = num1.plus(num2).

Kotlin

val num1 = 10
val num2 = 20
var sum = 0
// Your code here

Need a hint?

Remember, plus is a function that does the same as the + operator.

4

Print the result

Print the value of sum using println(sum).

Kotlin

val num1 = 10
val num2 = 20
var sum = 0
sum = num1.plus(num2)
// Your code here

Need a hint?

Use println to show the result on the screen.