#include <stdio.h>

typedef struct _chanInfo
{
	short	 id;
} PChan;

typedef struct _layerInfo
{
	short	 chans;
	PChan	*chanInfo;
} PLayer;

int
findChannel( PLayer	*layer, int chan )
{
	int	 i;
	int	 retval = -1;

	if ( NULL != layer )
	{
		for ( i = 0; i < layer->chans && retval < 0; ++i )
		{
			printf( "comparing %d vs. %d (retval = %d)\n", layer->chanInfo[i].id, chan, retval );
			if ( layer->chanInfo[i].id == chan )
				retval = i;
		}

		printf( "done searching: retval = %d for %d\n", retval, chan );

	}

	return retval;
}

int
findChannelAlsoOK( PLayer	*layer, int chan )
{
	int	 i;
	int	 retval = -1;

	if ( NULL != layer )
	{
		for ( i = 0; retval < 0 && i < layer->chans; ++i )
		{
			printf( "comparing %d vs. %d (retval = %d)\n", layer->chanInfo[i].id, chan, retval );
			if ( layer->chanInfo[i].id == chan )
				retval = i;
		}

		printf( "done searching: retval = %d for %d\n", retval, chan );

	}

	return retval;
}

int
findChannelOK( PLayer	*layer, int chan )
{
	int	 i;
	int	 retval = -1;

	if ( NULL != layer )
	{
		for ( i = 0; i < layer->chans; ++i )
		{
			printf( "comparing %d vs. %d (retval = %d)\n", layer->chanInfo[i].id, chan, retval );
			if ( layer->chanInfo[i].id == chan )
			{
				retval = i;
				break;
			}
		}

		printf( "done searching: retval = %d for %d\n", retval, chan );

	}

	return retval;
}

int
main( int argc, char *argv[] )
{
	int		 i;
	PLayer	*layer = new PLayer;

	layer->chans = 4;
	layer->chanInfo = new PChan[ 4 ];

	for ( i = 0; i < 4; ++i )
		layer->chanInfo[i].id = i;

	printf( "retval = %d\n", findChannel( layer, 0 ) );
	printf( "retval = %d\n", findChannel( layer, 1 ) );
	printf( "retval = %d\n", findChannel( layer, 2 ) );
	printf( "retval = %d\n", findChannel( layer, 3 ) );

	printf( "\n\nShould be OK\n" );

	printf( "retval = %d\n", findChannelOK( layer, 0 ) );
	printf( "retval = %d\n", findChannelOK( layer, 1 ) );
	printf( "retval = %d\n", findChannelOK( layer, 2 ) );
	printf( "retval = %d\n", findChannelOK( layer, 3 ) );

	printf( "\n\nAlso Should be OK\n" );

	printf( "retval = %d\n", findChannelAlsoOK( layer, 0 ) );
	printf( "retval = %d\n", findChannelAlsoOK( layer, 1 ) );
	printf( "retval = %d\n", findChannelAlsoOK( layer, 2 ) );
	printf( "retval = %d\n", findChannelAlsoOK( layer, 3 ) );
}