Var for variables (mutable) in Swift - Mini Project: Build & Apply

Var for variables (mutable)

📖 Scenario: Imagine you are keeping track of the number of apples you have in a basket. Sometimes you add apples, and sometimes you eat some. You want to write a program that can change the number of apples as you go.

🎯 Goal: You will create a variable to hold the number of apples, change its value, and then print the final number of apples.

📋 What You'll Learn

Create a variable called appleCount and set it to 10

Change the value of appleCount to 15

Print the value of appleCount

💡 Why This Matters

🌍 Real World

Variables like <code>appleCount</code> help keep track of changing information, like inventory or scores in games.

💼 Career

Understanding mutable variables is key for programming tasks where data changes over time, such as in app development or data processing.

1

Create a variable with initial value

Create a variable called appleCount and set it to 10 using var.

Swift

// Create a variable called appleCount and set it to 10
// Your code here

Need a hint?

Use var to create a variable that can change later.

2

Change the variable value

Change the value of the variable appleCount to 15.

Swift

var appleCount = 10
// Change appleCount to 15
// Your code here

Need a hint?

Just write appleCount = 15 to update the variable.

3

Use the variable in a calculation

Add 5 to the current value of appleCount and store the result back in appleCount.

Swift

var appleCount = 10
appleCount = 15
// Add 5 to appleCount
// Your code here

Need a hint?

Use appleCount = appleCount + 5 to add 5 to the current value.

4

Print the final value

Print the value of appleCount using print().

Swift

var appleCount = 10
appleCount = 15
appleCount = appleCount + 5
// Print appleCount
// Your code here

Need a hint?

Use print(appleCount) to show the number of apples.