🔁 What is a while Loop?

A while loop keeps executing a block of code as long as the condition is true.

✅ Syntax:

while(condition) {
    // loop body (runs repeatedly)
}

🔹 Before each iteration, the condition is checked.

🔹 If it’s true → loop runs

🔹 If false → loop stops

🔹 Example: Print numbers from 1 to 5

int i = 1;
while(i <= 5) {
    cout << i << " ";
    i++;
}

🧠 Output: 1 2 3 4 5

⚠️ Important:

You must update the loop variable (like i++), or you might create an infinite loop.

🔍 Real-Life Analogy:

Suppose you’re entering a password — and the system keeps asking "Enter again" until you type the correct one.

That’s a perfect use case for a while loop.

🔸 Infinite Loop Example: