conditional - What's the point of using "while (true) {...}"?

Question

Why do some people use while(true){} blocks in their code? How does it work?

Answer 1

It's an infinite loop. At each iteration, the condition will be evaluated. Since the condition is true, which is always... true... the loop will run forever. Exiting the loop is done by checking something inside the loop, and then breaking if necessary.

By placing the break check inside the loop, instead of using it as the condition, this can make it more clear that you're expecting this to run until some event occurs.

A common scenario where this is used is in games; you want to keep processing the action and rendering frames until the game is quit.