Char type and Unicode behavior in Kotlin - Mini Project: Build & Apply

Char type and Unicode behavior

📖 Scenario: You are working with characters in Kotlin and want to understand how the Char type works with Unicode values.

🎯 Goal: Learn how to create Char variables, use Unicode escape sequences, and print characters and their Unicode codes.

📋 What You'll Learn

Create Char variables with normal characters and Unicode escape sequences

Create an Int variable to hold the Unicode code of a character

Use println to display characters and their Unicode codes

💡 Why This Matters

🌍 Real World

Understanding <code>Char</code> and Unicode is important when working with text, symbols, and emojis in apps.

💼 Career

Many programming jobs require handling text data correctly, including Unicode characters for internationalization.

1

Create Char variables

Create a Char variable called letterA with the value 'A' and another Char variable called unicodeHeart with the Unicode escape sequence '\u2764'.

Kotlin

# Your code here

Need a hint?

Use single quotes for Char values. Unicode escape sequences start with \u followed by four hex digits.

2

Get Unicode code of a Char

Create an Int variable called codeOfHeart and assign it the Unicode code of the unicodeHeart character using unicodeHeart.code.

Kotlin

val letterA: Char = 'A'
val unicodeHeart: Char = '\u2764'
# Your code here

Need a hint?

Use the code property of a Char to get its Unicode integer value.

3

Print characters and Unicode codes

Use println to print letterA, unicodeHeart, and codeOfHeart each on its own line.

Kotlin

val letterA: Char = 'A'
val unicodeHeart: Char = '\u2764'
val codeOfHeart: Int = unicodeHeart.code
# Your code here

Need a hint?

Use println three times, once for each variable.

4

Final output check

Run the program and observe the output showing the character A, the heart symbol, and the Unicode code 10084.

Kotlin

val letterA: Char = 'A'
val unicodeHeart: Char = '\u2764'
val codeOfHeart: Int = unicodeHeart.code
println(letterA)
println(unicodeHeart)
println(codeOfHeart)
# Your code here

Need a hint?

The output should show the letter A, the heart symbol, and the number 10084 each on its own line.