# include <stdio.h>
# include <stdlib.h>
# include <time.h>

# include "vector.h"

int main ( );
void timestamp ( );

/******************************************************************************/

int main ( )

/******************************************************************************/
/*
  Purpose:

    vector_test() tests vector().

  Licensing:

    This code is distributed under the MIT license.

  Modified:

    11 October 2025

  Author:

    John Burkardt
*/
{
  int x_in[3] = { 10, 20, 30 };
  int x_out[3];

  timestamp ( );
  printf ( "\n" );
  printf ( "vector_test():\n" );
  printf ( "  C version\n" );
  printf ( "  Test vector(), with the interface:\n" );
  printf ( "  vector ( x_in, x_out )\n" );

  printf ( "\n" );
  printf ( "    vector ( NULL, NULL )\n" );
  vector ( NULL, NULL );

  printf ( "\n" );
  printf ( "    vector ( NULL, x_out )\n" );
  vector ( NULL, x_out );

  printf ( "\n" );
  printf ( "    vector ( x_in, NULL )\n" );
  vector ( x_in, NULL );

  x_in[0] = 100;
  x_in[1] = 200;
  x_in[2] = 300;

  printf ( "\n" );
  printf ( "    vector ( x_in, x_out )\n" );
  vector ( x_in, x_out );


/*
  Terminate.
*/
  printf ( "\n" );
  printf ( "vector_test():\n" );
  printf ( "  Normal end of execution.\n" );
  printf ( "\n" );
  timestamp ( );

  return 0;
}
/******************************************************************************/

void timestamp ( )

/******************************************************************************/
/*
  Purpose:

    timestamp() prints the current YMDHMS date as a time stamp.

  Example:

    17 June 2014 09:45:54 AM

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    01 May 2021

  Author:

    John Burkardt
*/
{
# define TIME_SIZE 40

  static char time_buffer[TIME_SIZE];
  const struct tm *tm;
  time_t now;

  now = time ( NULL );
  tm = localtime ( &now );

  strftime ( time_buffer, TIME_SIZE, "%d %B %Y %I:%M:%S %p", tm );

  printf ( "%s\n", time_buffer );

  return;
# undef TIME_SIZE
}