It is for a pc running xpsp2. I looked at multi-threading and it seems rather complex, but maybe it is not as hard as I think. What is this select statement? I saw it mentioned but googling it specifically did not reveal anything helpful.
Have a great day, Alex
----- Original Message ----- From: "Ken Perry" <whistler@xxxxxxxxxxxxx To: <programmingblind@xxxxxxxxxxxxx Date sent: Sat, 7 Jun 2008 22:14:35 -0700 Subject: RE: beepclock code attempt 2
Ok Alex what are you going to run this program on? I am thinking
your not
writing this for the PC and its important I know what platform
your running
it on so I can best direct your efforts. I have ran your program
and what
is happening is you have the getch commented out and it gets into
your
second loop and that is where it stays spinning away happily to
the next
minute. this is fine if you don't want input but judging by the
description
of the program you should be able to turn on and off the beeps.
and be able
to type q to quit. There are two main ways to accomplish this
and that is
one by threads and two by select. Now depending on what platform
your
writing this program for I can give you some advice.
If your writing this for the PC I would scrap everything your
doing and
download the boost libraries where you can get the boost threads
and the
boost time date functions which will make your life a dream.
If you don't want to get the boost classes then you will need to
learn how
to use select or download a good thread library for the mingw
compiler which
is what you are using under dev c++.
If your not writing it for the PC then let me know because that
will change
what I suggest.
Ken
_____
From: programmingblind-bounce@xxxxxxxxxxxxx[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Alex
Hall
Sent: Friday, June 06, 2008 8:46 PM To: programmingblind@xxxxxxxxxxxxx Subject: beepclock code attempt 2
Here is a second attempt, from a pc this time, to send the code
for
beepclock.cpp. See my previous message for an explanation of the
loop at the
end of the file.
Code:
#include <conio.h
#include <iostream
#include <windows.h
#include <stdio.h
#include <time.h
#include <stdlib.h
using namespace std;
int main () {
int end=0;
int min=0;//stores current system minutes
int min2=0;//stores minutes as well, used to make infinite loop
so beeps do
not happen //multiple times for the same minute int hour=0;//stores current hour bool beeps=true;//'true' is beeps enabled, 'false' is silence string cmd;cout<<"This program beeps once on the quarter hour, twice on the
half, and
three times at quarter of the hour, all at 488 mhz. Each hour it
beeps as
many times as the hour is at 244mhz. To silence beeps, type
\"s\", and to
enable beeps again type \"b\". To exit, press either \"e\" or
\"q\".\n";
while(end==0){//loop not supposed to ever end so monitoring of
sys clock and
//beep alerts continue until prog killed time_t now=time(NULL);//get current time in secs from 01-01-70tm* t =localtime(&now);//convert to tm struct for getting minutes
later
min=t->tm_min;//get minutes from said tm struct
min2=min;//used for loop at the end of this main loop
hour=t->tm_hour;//now get hours
if(hour>12) hour-=12;
if(hour==0)hour=12;
if(min==0&&beeps){
for(int i=0;i<hour;i++){
Beep(244, 500);
Sleep(500);
}
}
else{
if(min==15&&beeps){//15 past the hour, beep once
Beep(488, 500);
}
else if(min==30&&beeps){//half past, beep twice
Beep(488, 500);
Sleep(500);
Beep(488, 500);
}
else if(min==45&&beeps){//quarter of, beep 3 times
Beep(488, 500);
Sleep(500);
Beep(488, 500);
Sleep(500);
Beep(488, 500);
}
}
while(min==min2){
time_t now=time(NULL);//get current time in secs from 01-01-70
tm* t =localtime(&now);//convert to tm struct for getting minutes
later
min2=t->tm_min;//get minutes again to see if this loop should end //cmd=getch();//this loop is good for input//because it is almost always running, getch gets char from kbd
w/o <enter
if(cmd=="s"){
beeps=false;
system("cls");
cout<<"Beeps disabled, type \"b\" to enable.\n";
}
else if(cmd=="b"){
beeps=true;
system("cls");
cout<<"Beeps enabled, type \"s\" to disable.\n";
}
else if(cmd=="e"||cmd=="q"){
exit(0);
}
}
//cout<<"test";//alerts exiting of subloop, for testing
}
cin.get();
return false;
}
Have a great day, Alex
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