C++ while Loop – Repeat Until Condition Fails

🔁 C++ while Loop – Repeat Until Condition Fails

The while loop repeats code as long as a condition remains true. It’s like telling your program: “Keep going until I say stop!” 🛑➡️

🧠 Syntax of while Loop

while (condition) {
    // code to repeat
}

The condition is checked before each repetition. If it’s true, the loop runs again. If false, the loop exits.

🔧 Example: Print Numbers 1 to 5

#include <iostream>
using namespace std;

int main() {
    int i = 1;
    while (i <= 5) {
        cout << "i = " << i << endl;
        i++;
    }
    return 0;
}

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⚠️ Infinite Loop Warning

If the condition never becomes false, the loop runs forever (called an infinite loop). Like this:

while (true) {
    // This will run forever!
}

Always make sure your loop has a way to exit. 🚪

🎯 When to Use while?

When you don’t know ahead of time how many times to repeat.
For input loops, game loops, waiting for user actions, etc.

The while loop is like a loyal but cautious friend—it checks before it acts! 😄