📌 Booleans in Kotlin

In Kotlin, a Boolean is a data type that represents one of two values:

• true

• false

The Boolean type is often used for conditional logic, comparisons, and decision-making in programs.

✅ Declaring Boolean Variables

You can declare a Boolean variable using val (immutable) or var (mutable):

kotlin
var isJavaEasy: Boolean = falseprintln(isKotlinFun)  // Output: trueprintln(isJavaEasy)   // Output: false

Kotlin also supports type inference, so you don't always need to specify Boolean explicitly:

kotlin
val isSunny = true   // Type inferred as Booleanvar isRainy = false  // Type inferred as Boolean

✅ Boolean Operations

You can perform logical operations using the following operators:

📌 Example

kotlin
val a = trueval b = falseprintln(a && b)  // false (Both must be true)println(a || b)  // true (At least one is true)println(!a)      // false (Negates the value of 'a')

✅ Boolean with Conditional Statements

📍 Using If-Else

kotlin
val isLoggedIn = trueif (isLoggedIn) {    println("Welcome User!")} else {    println("Please log in.")}

✅ Boolean with Comparison Operators

Kotlin provides standard comparison operators that return a Boolean result:

• > (Greater than)

• < (Less than)

• >= (Greater than or equal to)

• <= (Less than or equal to)

• == (Equal to)

• != (Not equal to)

📌 Example

kotlin
val num1 = 10val num2 = 20println(num1 > num2)  // falseprintln(num1 < num2)  // trueprintln(num1 == num2) // falseprintln(num1 != num2) // true

✅ Boolean with Functions

You can return and manipulate Boolean values in functions:

kotlin
fun (age: Int): Boolean {    return age >= 18}println(isAdult(20))  // trueprintln(isAdult(16))  // false

✅ Conclusion

• Booleans are simple and efficient for logical operations.

• They are often used in decision-making using if-else and when statements.

• Logical operators like &&, ||, and ! are useful for complex conditions.

• Boolean values are returned from comparison operations.