how to make computer beep

jan1024188 · #1 12-31-2006, 01:09 AM

I have a problem....I wrote program which makes computer beep, but there is no beep when executing a program. I included windows.h header, defined speed and wrote following line

Code:

Beep(2750, speed);

Why there is no beep?

shabbir · #2 12-31-2006, 01:14 AM

Moved thread from Advance C to Begining C.

LaRoza · #3 07-27-2007, 09:58 AM

I dont know exactly what you want to do, but if you want a beep, use '\a'.

Here is an example so you can see it:

Code:

#include <stdio.h>
int main(void)
{
    printf("\a");
    return 0;
}

tiger12506 · #4 07-27-2007, 11:08 AM

\a does not work in Windows.
And Beep does not work in non-Windows environments

Perhaps your frequency of 2750 is higher than you expect, and you are missing it? Try 440. You *will* hear that.

And what is your value for speed? Make sure that it is at least 500, or you will miss the beep!

A better name would be 'duration'. (in milliseconds)

Cheers.

LaRoza · #5 07-30-2007, 08:22 AM

\a works, I just compiled and ran the exact code I posted and it worked fine in Windows XP Pro.

HowardL · #6 09-12-2007, 09:46 AM

Interesting... I found another in stdlib.h
I get the same darn ding.wav for all of these though. No change at all...
I'm in win98 on the old laptop using the mingw gnu C compiler.

Code:

#include <stdio.h>            /*  beep1.c  */
#include <windows.h>
#include <stdlib.h>

int main(void)
{
    int i, j, speed = 2000;

    printf("1 \a \n");      /* works with just stdio.h */
     Sleep(1000);            /* need windows.h */
                      /* must wait before dings or I won't get ding
                         I guess 'cause it's working so hard to make it: ) */

    printf("2  \n");
    putchar(0x07);          /* works with just stdio.h */
    Sleep(1000);

    printf("3  \n");
    Beep(2750, speed);      /* need windows.h */
    Sleep(1000); 
    
    printf("4  \n");
    _beep(2750, speed);     /* need stdlib.h */
    _sleep(1000);           /* need stdlib.h */


    /* I get the same Beep for all of these */

    for(i = 400; i <= 2000; i += 400 ) {
      for(j = 400; j <= 2000; j += 400) {
        printf("Beep(%d, %d)  \n", i, j);
        Beep(i, j);
        /* Beep(200, speed); */
        Sleep(1000);
      }
    }
    return 0;
}
/*
Here's where they come from in my mingw - includes directory:
-----
winbase.h
BOOL WINAPI Beep(DWORD,DWORD);
-----
stdlib.h
/ *
 * NOTE: Officially the three following functions are obsolete. The Win32 API
 *       functions SetErrorMode, Beep and Sleep are their replacements.
 * /
_CRTIMP void __cdecl	_beep (unsigned int, unsigned int);
_CRTIMP void __cdecl	_seterrormode (int);
_CRTIMP void __cdecl	_sleep (unsigned long);
*/

funny...
Howard;