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

# include "bicycle_lock.h"

int main ( );

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

int main ( )

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

    BICYCLE_LOCK_TEST tests BICYCLE_LOCK.

  Licensing:

    This code is distributed under the GNU LGPL license. 

  Modified:

    14 August 2017

  Author:

    John Burkardt
*/
{
  int c;
  int m = 3;
  int n = 10;
  int seed;
  int step;
  
  timestamp ( );
  printf ( "\n" );
  printf ( "BICYCLE_LOCK_TEST\n" );
  printf ( "  C version.\n" );
  printf ( "  A bicycle combination lock consists of 3 dials,\n" );
  printf ( "  each having 10 symbols, 0 through 9.\n" );
  printf ( "  We seek to determine the combination C.\n" );
/*
  Report on the problem data.
*/
  printf ( "\n" );
  printf ( "  The number of dials is M = %d\n", m );
  printf ( "  The number of symbols is N = %d\n", n );
  printf ( "  The number of possible combinations is M^N = %d\n", i4_power ( n, m ) );
/*
  Choose a combination.
*/
  seed = get_seed ( );
  c = i4_uniform_ab ( 0, 999, &seed );

  printf ( "  The \"secret\" combination is %d\n", c );
/*
  Try to determine the combination.
*/
  step = bicycle_lock ( c );

  if ( step == -1 )
  {
    printf ( "\n" );
    printf ( "  The combination was not found!\n" );
  }
  else
  {
    printf ( "\n" );
    printf ( "  The combination was found on step %d\n", step );
  }
/*
  Terminate.
*/
  printf ( "\n" );
  printf ( "BICYCLE_LOCK_TEST\n" );
  printf ( "  Normal end of execution.\n" );
  printf ( "\n" );
  timestamp ( );

  return 0;
}