make sounds (beep) with c++

How to make the hardware beep sound with c+开发者_运维技巧+?

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Print the special character ASCII BEL (code 7)

cout << '\a';

Source

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If you're using Windows OS then there is a function called Beep()

#include <iostream> 
#include <windows.h> // WinApi header 

using namespace std;

int main() 
{ 
    Beep(523,500); // 523 hertz (C5) for 500 milliseconds     
    cin.get(); // wait 
    return 0; 
}

Source: http://www.daniweb.com/forums/thread15252.html

For Linux based OS there is:

echo -e "\007" >/dev/tty10

And if you do not wish to use Beep() in windows you can do:

echo "^G"

Source: http://www.frank-buss.de/beep/index.html

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There are a few OS-specific routines for beeping.

• On a Unix-like OS, try the (n)curses beep() function. This is likely to be more portable than writing '\a' as others have suggested, although for most terminal emulators that will probably work.

• In some *BSDs there is a PC speaker device. Reading the driver source, the SPKRTONE ioctl seems to correspond to the raw hardware interface, but there also seems to be a high-level language built around write()-ing strings to the driver, described in the manpage.

• It looks like Linux has a similar driver (see this article for example; there is also some example code on this page if you scroll down a bit.).

• In Windows there is a function called Beep().

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alternatively in c or c++ after including stdio.h

char d=(char)(7);
printf("%c\n",d);

(char)7 is called the bell character.

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You could use conditional compilation:

#ifdef WINDOWS
#include <Windows.h>
void beep() {
  Beep(440, 1000);
}
#elif LINUX
#include <stdio.h>
void beep() {
  system("echo -e "\007" >/dev/tty10");
}
#else
#include <stdio.h>
void beep() {
  cout << "\a" << flush;
}
#endif

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std::cout << '\7';

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Here's one way:

cout << '\a';

From C++ Character Constants:

Alert: \a

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#include<iostream>
#include<conio.h>
#include<windows.h>
using namespace std;

int main()
{

    Beep(1568, 200);
    Beep(1568, 200);
    Beep(1568, 200);
    Beep(1245, 1000);
    Beep(1397, 200);
    Beep(1397, 200);
    Beep(1397, 200);
    Beep(1175, 1000);

cout<<endl;
_getch()

return 0
}

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I tried most things here, none worked on my Ubuntu VM.

Here is a quick hack (credits goes here):

#include <iostream>
int main() {
  system("(speaker-test -t sine -f 1000)& pid=$!; sleep 1.0s; kill -9 $pid");
}

It will basically use system's speaker-test to produce the sound. This will not terminate quickly though, so the command runs it in background (the & part), then captures its process id (the pid=$1 part), sleeps for a certain amount that you can change (the sleep 1.0s part) and then it kills that process (the kill -9 $pid part).

sine is the sound produced. You can change it to pink or to a wav file.

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Easiest way is probbaly just to print a ^G ascii bell

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The ASCII bell character might be what you are looking for. Number 7 in this table.

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cout << "\a";

In Xcode, After compiling, you have to run the executable by hand to hear the beep.