C localtime() function

Last update on December 21 2022 12:07:26 (UTC/GMT +8 hours)

C localtime() function - Convert a time value to a broken-down local time

Syntax:

struct tm *localtime(const time_t *timer)

The localtime() function is used to convert a time value, in seconds, to a structure of type tm.

The fields of the tm structure include:

tm_sec	Seconds (0-61)
tm_min	Minutes (0-59)
tm_hour	Hours (0-23)
tm_mday	Day of month (1-31)
tm_mon	Month (0-11; January = 0)
tm_year	Year (current year minus 1900)
tm_wday	Day of week (0-6; Sunday = 0)
tm_yday	Day of year (0-365; January 1 = 0)
tm_isdst	Zero if daylight saving time is not in effect; positive if daylight saving time is in effect; negative if the information is not available.

Parameters:

Name	Description	Required /Optional
timer	Pointer to stored time.	Required

Return value from localtime()

Returns a pointer to the structure result.
There is no error return value.

Example: localtime() function

The following example shows the usage of localtime() function.

#include <time.h>
#include <stdio.h>
 
int main(void)
{
   struct tm *new_time;
   time_t ltime;
 
   ltime = time(<ime);
   new_time = localtime(<ime);
   printf("The date and time is: %s", asctime(new_time));}

Output:

The date and time is: Tue Dec 20 21:50:05 2022

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