Swift else Statement

Swift Tutorial

🍎 Swift else Statement – Simple & Clear Guide

In Swift else Statement works with if to execute code when the if condition is false.
It helps you handle both outcomes of a decision.

1️⃣ What is else in Swift?

  • else runs only when the if condition is false

  • It must come after an if block

Syntax


2️⃣ Basic if–else Example ⭐


 

✔ Output:

Not eligible to vote

3️⃣ else if for Multiple Conditions ⭐

Used when you need to check more than one condition.


 

4️⃣ else with Logical Operators ⭐


 

5️⃣ else with Optional Binding ⭐⭐

Handle nil safely.


 

✔ Prevents crashes
✔ Common in real iOS apps

6️⃣ if–else as an Expression (Modern Swift ⭐⭐)

Swift allows if–else to return a value.


 

✔ Cleaner code
✔ Interview bonus point

7️⃣ Nested else ❌ (Avoid When Possible)


✅ Better:


8️⃣ Common Mistakes ❌

❌ Using else without if
❌ Forgetting {}
❌ Deep nesting
❌ Using non-Boolean conditions

📌 Interview Questions & Quick Answers

Q1. When does else execute?
👉 When if condition is false

Q2. Can else exist without if?
👉 ❌ No

Q3. Can if–else return a value in Swift?
👉 ✅ Yes

Q4. What is better for many conditions: else if or switch?
👉 switch

✅ Summary

  • else handles the false condition

  • Always paired with if

  • Use else if for multiple checks

  • Works with optionals and expressions

  • Core topic for Swift fundamentals & interviews

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