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< c‎ | chrono
Defined in header <time.h>
tm* localtime( const time_t *time );

Converts given time since epoch as time_t value into calendar time, expressed in local time.


[edit] Parameters

time - pointer to a time_t object to convert

[edit] Return value

pointer to a static internal tm object on success, or NULL otherwise. The structure may be shared between gmtime, localtime, and ctime, and may be overwritten on each invocation.

[edit] Notes

This function may not be thread-safe.

POSIX requires that this function sets errno to EOVERFLOW if it fails because the argument is too large.

[edit] Example

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
int main(void)
    time_t t = time(NULL);
    printf("UTC:   %s", asctime(gmtime(&t)));
    struct tm *tmptr = localtime(&t);
    if (tmptr == NULL)
       fprintf(stderr,"localtime() failed in file %s at line # %d\n", __FILE__,__LINE__-3);
    printf("local: %s", asctime(tmptr));
    return EXIT_SUCCESS;


UTC:   Wed Oct  9 10:37:39 2013
local: Wed Oct  9 17:37:39 2013

[edit] See also

converts time since epoch to calendar time expressed as Coordinated Universal Time (UTC)
C++ documentation for localtime