Int, Long, Float, Double number types in Kotlin - Mini Project: Build & Apply

Working with Int, Long, Float, and Double Number Types in Kotlin

📖 Scenario: You are creating a simple Kotlin program to store and display different types of numbers used in real life, such as counting items, measuring distances, or recording temperatures.

🎯 Goal: Build a Kotlin program that declares variables of type Int, Long, Float, and Double, assigns them specific values, and then prints these values.

📋 What You'll Learn

Create variables with exact names and values as instructed

Use Kotlin number types: Int, Long, Float, Double

Print the values exactly as shown

💡 Why This Matters

🌍 Real World

Number types like Int, Long, Float, and Double are used in apps to store counts, distances, prices, and measurements accurately.

💼 Career

Understanding these types helps you write programs that handle numbers correctly, which is essential for software development in finance, science, and many other fields.

1

Create Int and Long variables

Create a variable called countItems of type Int and set it to 150. Then create a variable called distanceInMeters of type Long and set it to 9876543210L.

Kotlin

# Create variables countItems and distanceInMeters with given values
# Your code here

Need a hint?

Remember to add L at the end of the Long value.

2

Create Float and Double variables

Create a variable called temperatureFloat of type Float and set it to 36.6F. Then create a variable called temperatureDouble of type Double and set it to 36.65.

Kotlin

val countItems: Int = 150
val distanceInMeters: Long = 9876543210L
# Create variables temperatureFloat and temperatureDouble with given values
# Your code here

Need a hint?

Remember to add F at the end of the Float value.

3

Use variables in expressions

Create a variable called totalTemperature of type Double that adds temperatureFloat and temperatureDouble. Use explicit conversion to Double for temperatureFloat.

Kotlin

val countItems: Int = 150
val distanceInMeters: Long = 9876543210L
val temperatureFloat: Float = 36.6F
val temperatureDouble: Double = 36.65
# Create totalTemperature by adding temperatureFloat and temperatureDouble
# Your code here

Need a hint?

Use toDouble() to convert Float to Double before adding.

4

Print all variable values

Print the values of countItems, distanceInMeters, temperatureFloat, temperatureDouble, and totalTemperature each on a new line using println.

Kotlin

val countItems: Int = 150
val distanceInMeters: Long = 9876543210L
val temperatureFloat: Float = 36.6F
val temperatureDouble: Double = 36.65
val totalTemperature: Double = temperatureFloat.toDouble() + temperatureDouble
# Print all variable values below
# Your code here

Need a hint?

Use println for each variable to print its value on a new line.