String interpolation in Swift - Mini Project: Build & Apply

String interpolation

📖 Scenario: You are creating a simple program to greet users by their name and age. This is like writing a friendly note that includes their details.

🎯 Goal: Build a Swift program that uses string interpolation to combine variables into a greeting message.

📋 What You'll Learn

Create variables with exact names and values

Use string interpolation to build a greeting message

Print the final greeting message

💡 Why This Matters

🌍 Real World

String interpolation is used in apps to create messages, labels, and notifications that include user data or dynamic information.

💼 Career

Knowing string interpolation helps you build user-friendly interfaces and display information clearly in software development jobs.

1

Create user data variables

Create a variable called name and set it to the string "Alice". Create another variable called age and set it to the integer 30.

Swift

# Your code here

Need a hint?

Use var to create variables and assign the exact values given.

2

Create a greeting message variable

Create a variable called greeting and set it to a string that uses string interpolation to include the name and age variables in this exact format: "Hello, my name is Alice and I am 30 years old."

Swift

var name = "Alice"
var age = 30
# Your code here

Need a hint?

Use \(variableName) inside the string to insert variable values.

3

Modify the age variable

Change the value of the age variable to 31.

Swift

var name = "Alice"
var age = 30
var greeting = "Hello, my name is \(name) and I am \(age) years old."
age = 31
# Your code here

Need a hint?

Assign the new value directly to the age variable.

4

Print the greeting message

Write a print statement to display the greeting variable.

Swift

var name = "Alice"
var age = 31
var greeting = "Hello, my name is \(name) and I am \(age) years old."
# Your code here

Need a hint?

Use print(greeting) to show the message on the screen.