Windows和linux下clock函数

时间:2023-02-13 15:49:14

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