Dev C++ Sleep Function
I’m not sure how often you will use this, but I can come up with a practical reason for sleeping in milliseconds in C++ and I will show you how on this page! The reason that I had slept is because I was running test cases of random numbers with a for loop. As you use seed(null) for the random function, usually it runs so fast that the random numbers don’t vary much. Therefore, I just used the sleep function for 5 second intervals in between.
Aug 20, 2013 This feature is not available right now. Please try again later. Sleep makes the calling thread sleep until seconds seconds have elapsed or a signal arrives which is not ignored. Return Value Zero if the requested time has elapsed, or the number of seconds left to sleep, if the call was interrupted by a signal handler. The sleep function waits for seconds seconds or until a signal is delivered, whichever happens first. If sleep returns because the requested interval is over, it returns a value of zero. If it returns because of delivery of a signal, its return value is the remaining time in the sleep interval. The sleep function is declared in unistd.h. A proper sleep function, one which passes control to the system scheduler and allows other processes to run, would not be portable between Windows and the various Unix-like systems. Moreover, while in practice timet is almost invariably defined as an integral value holding the seconds since 00:00 1 Jan 1970, the key word here is almost.
For Windows
The function above will only run on Windows. When writing the sleep function, don’t forget to capitalize the S in Sleep. The parameter for the function is how long you want the program to sleep for in milliseconds. So, as shown above, I had entered 1000 which is the same as 1 second. If you wanted 5 seconds, you would put 5000 and so on.
For C++ 11
This utilizes C++ 11.
Example
Above I show the sleep function in action. First, I use the time function which in order to use, you need to # include ctime. Then I also use a time_t variable to store the current time. When printing it out, you can see the first line in the program is 3 seconds before the second line. The reason for this is the sleep function that is on line 11. As you can see, I entered 3000 milliseconds as the parameter which is 3 seconds.
C++ Sleep Function Linux
Well, there you have it, the sleep function in C++. I don’t know how often you will use it but now you know just in case! Feel free to check out other articles on the site as I think you would enjoy them!
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Sleep Function In C
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