if/else basics
Learn the basics of if/else conditions, truth checks, and nesting in Swift.
if/else basics is a free Swift Academy lesson on CoddyKit. This is lesson 1 of 3. Any 3 lessons of this learning path are free to read in full — after that, CoddyKit PRO unlocks every lesson, plus hands-on practice with a built-in code editor and a 24/7 AI tutor. It is part of the Swift Academy learning path, and your progress syncs across the web and the CoddyKit app. The Swift Academy course includes 3 lessons in total.
Intro
if/else lets you run code based on conditions. Swift requires a Bool expression inside if.
Simple if
A simple if runs its block when the condition is true.
let age = 20
if age >= 18 {
print("Adult")
}if/else
if/else executes one branch or the other, never both.
let score = 45
if score >= 50 {
print("Pass")
} else {
print("Fail")
}else if chain
Use else if for multiple ranges. Only the first true branch runs.
let temp = 5
if temp > 25 {
print("Hot")
} else if temp > 10 {
print("Mild")
} else {
print("Cold")
}Nesting
You can nest if statements, but guard/early-exit is often cleaner.
let isMember = true
let balance = 20
if isMember {
if balance >= 10 {
print("Discount applied")
}
}Tips
Tips:
- Conditions must be Bool, not Int.
- Use braces even for one-liners for clarity.
- Avoid deep nesting by using guard or early returns.
If skip behavior
Quick check: What happens if an if condition is false with no else?
Recap
Recap: Use if/else to branch. Conditions must be Bool. Chains and nesting are possible, but keep logic simple.
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Frequently Asked Questions
Is the “if/else basics” lesson free?
Yes — any 3 lessons of the Swift Academy learning path, including “if/else basics”, are free to read in full here on the web. After that, CoddyKit PRO unlocks every lesson, plus interactive practice with a built-in code editor and a 24/7 AI tutor. The Swift Academy course includes 3 lessons in total.
What will I learn in “if/else basics”?
Learn the basics of if/else conditions, truth checks, and nesting in Swift. You practise Swift Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Swift Academy?
No prior experience is required. Swift Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 1 of 3.
How long does the “if/else basics” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Swift Academy lesson?
Yes. Every Swift Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.