I need to loop for a certain amount of time based on user input ( in C Program ).
Example: User says loop for 2 Minutes ( = 120 seconds).
while(time <= 2 Minutes)
{
do something
}
How would I go about doing this in C? Thanks for your help!!
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do you need to _loop_ or _wait_ for that amount of time ? If it's the later, then you want to look into `sleep(3)` and `usleep(3)` probably – c00kiemon5ter Sep 21 '13 at 19:35
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2http://stackoverflow.com/questions/15348318/creating-a-timer-in-c – Robert Harvey Sep 21 '13 at 19:35
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2http://stackoverflow.com/questions/17167949/how-to-use-timer-in-c – Robert Harvey Sep 21 '13 at 19:35
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2http://stackoverflow.com/questions/10189845/how-to-implement-a-timer-in-c – Robert Harvey Sep 21 '13 at 19:36
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2http://www.daniweb.com/software-development/c/threads/129580/how-to-use-timer-in-c – Robert Harvey Sep 21 '13 at 19:37
2 Answers
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You do not need to loop.
Just take a nap. It will sleep for the amount of time and let the processor to do something more useful
Ed Heal
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I need to perform some operation as many times as possible within the specific period of time...thus napping is not an option for me! – Jake Z Sep 21 '13 at 20:00
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1You did not point that out in the question. Besides how long does the operation in the loop take. Perhaps it should periodically ask - Should I abort. – Ed Heal Sep 21 '13 at 20:06
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If you need to perform some operation as many times as possible within the specific period of time you can use time():
time_t secs = 120; // 2 minutes (can be retrieved from user's input)
time_t startTime = time(NULL);
while (time(NULL) - startTime < secs)
{
...
}
LihO
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This is perfectly what I need! However, when I compile, I get this error: "error: too few arguements to function 'time'." – Jake Z Sep 21 '13 at 19:55
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@JakeZ: Yah, you should pass `NULL` to get the current time. I also added a link to man page of `time` function. – LihO Sep 21 '13 at 20:01
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