Question

Why do we use while loops?



To repeat code a specific number of times


To use if-else statements in a loop


To repeat code when the number of times to repeat is unknown


To determine if a condition is true

Answer 1

While loops are primarily used **to repeat code when the number of times to repeat is unknown**. They execute a block of code as long as a specified condition is true, making them ideal for scenarios where the number of iterations cannot be predetermined.

Here's a brief overview of the options you provided:

- **To repeat code a specific number of times**: This is typically done with for loops, not while loops, since for loops are designed for a known number of iterations.

- **To use if-else statements in a loop**: While you can certainly use if-else statements inside a while loop, it's not the primary purpose of a while loop.

- **To repeat code when the number of times to repeat is unknown**: This is the correct use of while loops.

- **To determine if a condition is true**: While the loop relies on evaluating a condition, the main purpose of the loop is to repeat a block of code based on that condition being true.

So, the best answer is: **To repeat code when the number of times to repeat is unknown**.