/* test_time.c  */
#include <time.h>
#include <stddef.h>
#include <stdio.h>
static time_t max_date(time_t t1, time_t t2);

void main(void){
  time_t clock, clock2, clock3;
  struct tm * date;
  char long_date[27];
  char short_date[12];

  clock = time((time_t)0);
  printf("%dl  %ol  %Xl  raw time \n", clock, clock, clock);

  strcpy(long_date,ctime(&clock));
  printf("%s  =long date \n", long_date);

  strncpy(&short_date[0], &long_date[4], 7);
  strncpy(&short_date[7], &long_date[20], 4);
  short_date[11]='\0';
  printf("%s  =short date \n", short_date);

  clock2 = time((time_t)0);
  while(clock2 == clock)  clock2 = time((time_t)0);

  printf("%dl  %ol  %Xl  raw time \n", clock2, clock2, clock2);
  clock3 = max_date(clock,clock2);
  printf("%dl  %ol  %Xl  raw time \n", clock3, clock3, clock3);

  strcpy(long_date,ctime(&clock3));
  printf("%s  =long date \n", long_date);
}

static time_t max_date(time_t t1, time_t t2)
{
  if(difftime(t1,t2))
     return t2;
  else
     return t1;
}