如何在C中创建计时器？

Question

我想创建一个计算秒数并显示它们的计时器，但同时我想做其他操作。有人可以解释我如何做到这一点，或者这是否可行（在Visual Studio中）？

Answer 1

This is one way to handle your desired actions.

in main thread, 
-fork a child process. passing
    1) a desired time interval 
    2) a callback function ptr
    3) indication of oneShot or repeating timer
    into the child process,

in the child process:
-begin loop
    -sleep the passed-in-time-interval
    -execute the call back function 
    -if non repeating timer
    -then
        -exit child process
    -endif
-end loop

in main thread, in the call back function:
-get current time
-display the current time to user
-return

in main thread, when ready to exit, kill child thread