unixtodos

Remonter à Dos.h - Index

Header File

dos.h

Category

Time and Date Routines

Prototype

void unixtodos(long time, struct date *d, struct time *t);

Description

Converts date and time from UNIX to DOS format.

unixtodos converts the UNIX-format time given in time to DOS format and fills in the date and time structures pointed to by d and t.

time must not represent a calendar time earlier than Jan. 1, 1980 00:00:00.

Return Value

None.

Example

 #include <stdio.h>
 #include <dos.h>
 char *month[] = {"---", "Jan", "Feb", "Mar", "Apr", "May", "Jun",
                         "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
 #define SECONDS_PER_DAY 86400L  /* the number of seconds in one day */
 struct date dt;
 struct time tm;
 int main(void)
 {
    unsigned long val;
 /* get today's date and time */
    getdate(&dt);
    gettime(&tm);
    printf("today is %d %s %d\n", dt.da_day, month[dt.da_mon], dt.da_year);
 /*convert date and time to unix format (num of seconds since Jan 1, 1970*/
    val = dostounix(&dt, &tm);
 /* subtract 42 days worth of seconds */
    val -= (SECONDS_PER_DAY * 42);
 /* convert back to dos time and date */
    unixtodos(val, &dt, &tm);
    printf("42 days ago it was %d %s %d\n",
           dt.da_day, month[dt.da_mon], dt.da_year);
    return 0;
 }

Portability

POSIX	Win32	ANSI C	ANSI C++
	+