Date programs c

I want to create and display a countdown timer that displays 60 seconds or less. I need to be able to set the number of seconds, for the initial display, and have a start and stop button to start or stop the timer. I want the timer to display a digital countdown of the seconds in real time. In other words the time display would start at 60 seconds or less and replace each number with the descending next whole number all the way to zero or double zero.

I hope you can use the example to solve your own problem. Good Luck! For delays of multiple seconds, your best bet is probably to use sleep. For delays of at least tens of milliseconds about 10 ms seems to be the minimum delay , usleep should work. See the manual pages sleep 3 and usleep 3 for details. Take a look at this page that has more about high resolution timing on Linux.

Hi, thanks for this useful article. Tried the following snippet — after mktime returns, it increments. Thanks in advance. Within my program i have the following In each case i use the localtime function to extract the time data and display, this process seems to work fine for the zone time differrence e. A day will be incremented like that…. How can I write a delay function in C using system clock? Any Idea? Please help me..

Second, include Windows. Third the minimum supported client is Windows Professional and the minimum supported server is Windows Server. More information on Windows time function you can find here. I hope it helps! Many thanks for this! If i may criticise one point — your timezones example has the potential to go over midnight, and even negative.

I achieved it using mktime, again using your examples above, to ensure the hours remained between 0 and 23 inclusive. Can you share some idea on showing countdown of the time left. I want to make a program in c in which i want to calculate how much time my program take to execute.

From the current system date, i want to know the Day? All Rights Reserved. Home About. Output example: Number of hours since January 1, is Output example: Tue Feb 26 This entry was posted in C Tutorials. Learn CSS. Learn JavaScript. C Language C Tutorial. C Compiler. Standard Template Library. Python Python Tutorial. Python Programs. Python How Tos. Numpy Module. Matplotlib Module. Tkinter Module. Network Programming with Python. Learn Web Scraping.

More in Python Python Compiler. Java Core Java Tutorial. Java Type Conversion Examples. Java Wrapper Class. Java 8. Java Viewed 6k times. Improve this question. Jonathan Leffler k gold badges silver badges bronze badges. Otherwise you don't have a valid string in day. Same problem for year. Wow I feel goofy for that one.. Thank you so much! Get used to that feeling -- it won't be the last time : — David C.

Note that you've not left any margin for error. If the user types a space somewhere, you'll get bogus input. It's generally better to leave room for user's to be inventive and to check that they weren't. You don't check that you get any input — you should. Add a comment. Active Oldest Votes. Improve this answer. Schwern Schwern k 22 22 gold badges silver badges bronze badges.