C语言中获得本地日期

#include <time.h>
#include <stdio.h>
int main(int argc, char** argv)
{
    struct tm *date;
    time_t t;
    t=time(NULL);
    date=localtime(&t);
    printf("Local time is: %d:%d:%d\n", date->tm_hour, date->tm_min, date->tm_sec);
    date=gmtime(&t);
    printf("UTC time is: %d:%d:%d\n",   date->tm_hour, date->tm_min, date->tm_sec);
    return 0;
}