Loop Limit in C/C++

Answer 1

There is no limit to how many times a loop may loop. There are limits to the max and minimum values of an int, and those may play into your loop. In this case, 800 should be fine, so there is something else going on here.

Edit: Works for me... the only weird thing I see is that you reset X inside the innermost loop, so the output is always the last integer entered if it's >0, or 0.

Answer 2

Are you piping input to this program? There may be some buffering limitation with that. Try putting the data in a file and read from the file.

Answer 3

It's common practice to loop 10,000 times or (much) more to compare the performance of two small calculations.

If there was a limit, there wouldn't be such as thing as an infinite loop. ;)