Hands-On Object-Oriented Programming with Kotlin

Real data types

In this category, Kotlin provides two data types:

• Float
• Double

These data types can store values containing decimal places. Float and Double are the floating point data types that are used to store real number values. A Float can contain 4 bytes of information, while the Double data type can handle 8 bytes. Kotlin allows us to handle scientific notation with the Double data type as follows:

1. Create two Double types of variables as follows:

• Create d1 with an explicit declaration of the data type
• Create d2 with an implicit declaration:

fun main(args: Array<String>) {    var d1 : Double = 7.20E15 // Scientific calculation    var d2 = 7.20e-15    

2. Assign scientific values to both variables and print:

println("Value of d1 = " + d1 ...