C / C++ / MFC

while (TRUE)<br />
      {    <br />
           //play a tone<br />
        <br />
	   // get user response (keyboard input)<br />
           responded = get_response() ;<br />
<br />
	   // if no response, increase by 5 dB, go to "play tone"<br />
	   if (responded == FALSE)<br />
			<br />
	   // else process the response<br />
	   else<br />
	   {<br />
	      //process response 	<br />
	       threshold_found = process_success();<br />
			<br />
	      //if threshold not found, decrease by 10 dB, go to "play tone"<br />
		if (threshold_found == FALSE)<br />
				<br />
		// else record threshold and go to next frequency, <br />
		// restore familiarization_level, go to "play tone"<br />
		else<br />
		{<br />
		     record_threshold() ;<br />
				<br />
		     // restart the test at the next frequency			<br />
		     restart = restartTest() ;<br />
		     // if finished with test get out of while loop		<br />
		     if(restart == FALSE)<br />
			break ;		<br />
		}<br />
	    }<br />
	}

while(iCheck == BST_CHECKED)<br />
			{	<br />
				gen_sound(0, 0.02, 1, current_frequency, duration) ; // play tone<br />
<br />
				while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))<br />
				{<br />
					TranslateMessage (&msg) ;<br />
					DispatchMessage (&msg) ;<br />
<br />
					if(msg.message == WM_COMMAND)<br />
					{<br />
						if(msg.wParam == IDC_START) //check if start button has been pressed<br />
							iCheck = (int) SendMessage(hCtrl, BM_GETCHECK, 0, 0) ;<br />
<br />
						break ;<br />
					}<br />
														<br />
				}<br />
			}