#include <dos.h>

/**********************************TONE***********************************/
/*         Produces tone at frequency, duration (of sound)               */
/*     Arguments in: freq [in Hz], dur [duration in millisec.]           */
/*************************************************************************/

void tone( int freq, int dur )
{
		sound( freq );
		delay( dur );
		nosound();
		return;
}

/**************************************************************************/
/*                 Produces a "two-tone" sound  (beep-boop)               */
/**************************************************************************/
void two_tone()

{
	int frequency,
		 duration;

		frequency = 700;
		duration  = 165;
		tone( frequency, duration );

		frequency = 450;
		duration = 110;
		tone( frequency, duration );

}



/**************************************************************************/
/*                                   BELL                                 */
/*                   Produces a succession of 'beep' tones                */
/*               Takes 'times' as argument [# of times to beep]           */
/**************************************************************************/

void bell( int times )

{
		while( times-- )
			{
			tone(380,165);
			delay (20 );
			}
		return;
}

/**************************************************************************/
/*                                   BLATT                                */
/*                         Produces a "Bronx Cheer"                       */
/*                         [use with error routine]                       */
/**************************************************************************/

void blatt()

{
		tone( 42,330 ); 
		tone(34,220);
		return;  
}