Unlocking the Mystery of the do-while Loop
🔓 Understanding the do-while Loop
You already know about for and while loops. But what about the do-while loop? It’s a cool one—and a bit different.
🧠 Think of It Like This:
“Do this thing first, then keep doing it while the condition is true.”
🧩 How It Works:
do— Do something once, no matter what.-
while (condition)— Check the condition after doing it.- If it’s true, repeat.
- If it’s false, stop.
🎮 Example: Number Guessing Game
Imagine a friend is guessing a number between 1 and 10. They must guess at least once, right?
int guess;
do {
printf("Guess a number between 1 and 10: ");
scanf("%d", &guess);
} while (guess != secretNumber);
printf("You got it!\n");
💡 Even if the first guess is correct, the loop still runs once before checking.
⚡ Why Use do-while?
Use it when you want the code to run at least once, even if the condition is false right away. That’s the key difference from while and for.
📝 Quick Quiz
Q1:
What makes the do-while loop different from the while loop?
(a) It always runs the code block at least once
(b) while loops always run once
(c) do-while is only for counting
(d) while is only for conditions
Q2:
Which loop would you use if you want a user to enter a character until they type 'q'?
(a) for — best for fixed repeats
(b) while — only checks first
(c) do-while — ensures at least one prompt
(d) None of the above