Can somebody explain what for(;;) does in C?

[KnowledgeSeeker]

Can somebody explain what for(;;) does in C?

for(;;) { while (something) {
  }
}

[anup30]

nested loop.
similar to this

while(true) {
	while (something) {
		//...
	}
	// break condition
}

[Faison]

The for(;;) loop is a way of saying, "forever." It has no condition, and therefore does not test for anything. A non-existent test can never be false(the condition for exiting a loop), and so it will run forever. The while(true) loop is similar because a statement is given to the loop, rather than a predicate. A statement never changes, and since it's 'true', it will never be false and the loop never exits.

[anup30]

it can exit by writing a break condition.