CODEWITHSUNDEEP
c
Mayank Patel
Mayank Patel

Reputation: 23

How to store current system date in structure?

My program to find current system date and time is 

#include<stdio.h>
#include<time.h>
struct date{
int day,month,year;
};
main()
{
    time_t t;
    time(&t);
    printf("Today's date and time is %s",ctime(&t));


}

and i want to store this current date to structure Please give me a suggestion of that.

Upvotes: 0

Views: 220

Answers (1)

Potatoswatter
Potatoswatter

Reputation: 137900

The standard library already has a structure like yours: struct tm in <time.h>.

       int tm_sec;     /* seconds (0 - 60) */
       int tm_min;     /* minutes (0 - 59) */
       int tm_hour;    /* hours (0 - 23) */
       int tm_mday;    /* day of month (1 - 31) */
       int tm_mon;     /* month of year (0 - 11) */
       int tm_year;    /* year - 1900 */
       int tm_wday;    /* day of week (Sunday = 0) */
       int tm_yday;    /* day of year (0 - 365) */
       int tm_isdst;   /* is summer time in effect? */
       char *tm_zone;  /* abbreviation of timezone name */
       long tm_gmtoff; /* offset from UTC in seconds */

The library provides a global variable of type struct tm which is filled by the functions localtime (for your time zone) and gmtime (for GMT time).

C11 also specifies localtime_s and gmtime_s which avoid the issues associated with global variables, but I don't know how widely supported they are. POSIX also specifies the similar gmtime_r and localtime_r.

Upvotes: 3

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