MATLAB while Loop

🔁 MATLAB while Loop 

It is mainly used when the number of iterations is not known in advance.
MATLAB is developed by MathWorks.

🔹 What Is a while Loop?

A while loop:

• Checks the condition before each iteration

• Executes code while the condition is true

• Stops when the condition becomes false

1️⃣ Basic while Loop Syntax

📌 end is mandatory.

2️⃣ Simple while Loop Example

Output

3️⃣ Sum of Numbers Using while Loop

Output

4️⃣ while Loop with Condition Check

Output

5️⃣ Using Logical Operators in while

Output

6️⃣ Infinite while Loop (⚠️ Careful)

📌 Stops only using Ctrl + C.

⚠️ Important Rules

• Condition must be logical

• Loop variable must be updated inside the loop

• Infinite loops occur if condition never becomes false

• Use break to exit loop early

🎯 Interview Questions: MATLAB while Loop

🔹 Q1. When should you use a while loop?

Answer:
When the number of iterations is not known beforehand.

🔹 Q2. What happens if the condition is false initially?

Answer:
The loop body will not execute at all.

🔹 Q3. Is end mandatory in while loop?

Answer:
Yes.

🔹 Q4. How do you stop an infinite loop?

Answer:
Using Ctrl + C or break.

🔹 Q5. Can logical operators be used in while condition?

Answer:
Yes (&&, ||, ~).

🔹 Q6. Difference between for and while loop?

Answer:
for → known iterations,
while → unknown iterations.

🔹 Q7. What causes infinite loops?

Answer:
When loop condition never becomes false.

✅ Summary

• while loop runs based on condition

• Iterations are not fixing

• Condition checked before each iteration

• Powerful for condition-controlled loops