Windows和linux下clock函数

windows:  Calculates the wall-clock time used by the calling process. return:The elapsed wall-clock time since the start of the process

Linux:The clock() function returns an approximation of processor time used by the program

Windows：

 #include <stdio.h>
 #include <time.h>
 #include <windows.h>

 int main()
 {
     printf("The start clock is: %ld\n", clock());
     Sleep();
     printf("The end clock is: %ld\n", clock());

     return ;
 }

Linux：

 #include <stdio.h>
 #include <time.h>
 #include <unistd.h>

 int main()
 {
         printf("The start clock is: %ld\n", clock());
         sleep();
         printf("The end clock is: %ld\n", clock());

         return ;
 }

 

运行的结果：

Windows：

The start clock is: 1

The end clock is: 2001

Linux：

The start clock is: 0

The end clock is: 0

参考：

http://blog.csdn.net/lxmky/article/details/7026986

http://msdn.microsoft.com/en-us/library/aa272059(v=vs.60).aspx

man clock