如何在C中创建一个定时器？

Question

我想创建一个计时器，计算秒数并显示它们，但并行地我想执行其他操作。有人可以解释我怎么做，或者如果这是可能的（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