dtbits.c

不错书对C++/C程序员很有用的大家不要错过.

#include <stdio.h>
#include <dos.h>  
#include <fcntl.h>

void main(int argc, char *argv[])
{
    struct Date
    {
      unsigned int day:5;
      unsigned int month:4;
      unsigned int years:7;
    } date;

    struct Time
    {
      unsigned seconds:5;
      unsigned minutes:6;
      unsigned hours:5;
    } time;

    int handle;

    if (_dos_open(argv[1], O_RDONLY, &handle))
		fprintf(stderr, "Error opening source file\n");
    else
     {
		if (_dos_getftime(handle, &date, &time))
	  		printf("Error getting date and time stamp\n");
		else
	  		printf("%s last modified %02d-%02d-%d %02d:%02d:%02d\n",
			   argv[1],
			   date.month,			 // month 
			   date.day,			 // day 
			   date.years + 1980,	 // year 
			   time.hours,           // hours 
			   time.minutes,         // minutes 
			   time.seconds * 2);    // seconds 
			_dos_close(handle);
    }
 }