MATLAB switch case Statement

🔁 MATLAB switch case Statement

It is a clean alternative to multiple if–elseif statements, especially when comparing one variable against many values.
MATLAB is developed by MathWorks.

🔹 What Is switch–case?

• Evaluates one expression

• Matches it against different cases

• Executes the matching case block

• If no case matches → otherwise runs

1️⃣ Basic switch–case Syntax

📌 end is mandatory.

2️⃣ Simple Example

Output

3️⃣ Using Multiple Values in One Case

Output

4️⃣ switch–case with Strings

Output

📌 Works with strings and characters.

5️⃣ switch–case Without otherwise

Output

📌 otherwise is optional but recommended.

6️⃣ Menu-Based Example

Output

⚠️ Important Rules

• Expression is evaluated once

• Uses exact matching (== not required)

• No break needed (unlike C/C++)

• case values must be unique

🎯 Interview Questions: MATLAB switch–case

🔹 Q1. What is the use of switch–case in MATLAB?

Answer:
To perform multi-way decision making.

🔹 Q2. Difference between if–elseif and switch–case?

Answer:
switch–case is cleaner and faster for multiple fixed comparisons.

🔹 Q3. Is break required in MATLAB switch?

Answer:
No, MATLAB automatically breaks after matching case.

🔹 Q4. Can we use strings in switch–case?

Answer:
Yes, MATLAB supports strings and characters.

🔹 Q5. What happens if no case matches?

Answer:
otherwise block executes (if present).

🔹 Q6. Can multiple values be used in one case?

Answer:
Yes, using cell array {}.

🔹 Q7. Is otherwise mandatory?

Answer:
No, but recommended.

✅ Summary

• Used for multi-condition checks

• Cleaner than multiple if–elseif

• No break needed

• Supports numbers & strings