time.c

一个类linux的dos下开发的操作系统.

#include <stdio.h> /* printf() */
#include <time.h> /* time_t, time() */
#include <os.h> /* sleep() */
/*****************************************************************************
for MinGW32
*****************************************************************************/
#ifdef __WIN32__
int __main(void) { return 0; }
#endif
/*****************************************************************************
*****************************************************************************/
int main(void)
{
	unsigned char min, sec, hour;
	time_t t;

	while(1)
	{
/* get time */
		t = time(NULL);
/* convert to HH:MM:SS */
		sec = t % 60;
		t /= 60;
		min = t % 60;
		t /= 60;
		hour = t % 24;
		t /= 24;
/* print it */
		printf("time is %02u:%02u:%02u\n", hour, min, sec);
/* 1-second delay */
		sleep(1000000);
	}
	return 0;
}