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How can i make my timer run while I can input? Help please.

taguroFTW (14)
Like if I hit Escape button from my keyboard, the loop will stop?

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#include <iostream>
#include <conio.h>
#include <string.h>
#include <windows.h>
#include <stdio.h>

using namespace std;
int main()
{
	char ans;
	 int m, s,h;
	 cout << "A COUNTDOWN TIMER " << endl;
	 cout << "enter time in hours here" << endl;
	 cin >> h;
	 cout << "enter time in minutes here " << endl;
	 cin >> m;
	 cout << "enter im in seconds here" << endl;
	 cin >> s;
	 cout << "Press any key to start" << endl;
	 cout << " A COUNTDOWN TIMER" << endl;
	 cout << "time remaining" << endl;
	 cout << "hours : " << h << "mins : " << m << " secs : " << s << endl;
	 
	 for (int hour = h; hour >= 0; hour--)
	 {
		 for (int min = m; min >= 0 ; min--)
		 {
			 if ( min == 0 && h > 0)
				 m = 59;
			for (int sec = s; sec >= 0; sec--)
			{
				if ( sec == 0 )
					s = 59;
				Sleep(1000);
				system("cls");
				cout<<"\n\n[Esc] 	Logout"<<endl;
				cout << hour << " :hours " << min << " :mins " << sec << " :secs"  << endl;
				cin>>ans;
				
				switch(ans){
					case 'a':
						break;
				}
				
			}
		 }
	 }
	 
	Sleep(1000);
	 cout << "THE END" << endl;
	 
	return 0;
}
Last edited on
Gamer2015 (810)
You'll have to work with a thread here...
in your main you just print everything and in the thread you check if the key is pressed

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#include <atomic> // std::atomic
#include <thread> // std::thread
#include <iostream> // std::cout, std::cin
#include <windows.h>
using namespace std;

std::atomic<bool> a_set = false;
void check()
{
    char ans;

while(a_set == false)
{
    cin >> ans;
    switch(ans)
    {
    case 'a': a_set = true; break;
    default: break;
    }
}
}

int main()
{
        std::thread keybord_checker(check);
	char ans;
	 int m, s,h;
	 cout << "A COUNTDOWN TIMER " << endl;
	 cout << "enter time in hours here" << endl;
	 cin >> h;
	 cout << "enter time in minutes here " << endl;
	 cin >> m;
	 cout << "enter im in seconds here" << endl;
	 cin >> s;
	 cout << "Press any key to start" << endl;
	 cout << " A COUNTDOWN TIMER" << endl;
	 cout << "time remaining" << endl;
	 cout << "hours : " << h << "mins : " << m << " secs : " << s << endl;
	 
	 for (int hour = h; hour >= 0; hour--)
	 {
		 for (int min = m; min >= 0 ; min--)
		 {
			 if ( min == 0 && h > 0)
				 m = 59;
			for (int sec = s; sec >= 0; sec--)
			{
				if ( sec == 0 )
					s = 59;
				Sleep(1000);
				system("cls");
				cout<<"\n\n[Esc] 	Logout"<<endl;
				cout << hour << " :hours " << min << " :mins " << sec << " :secs"  << endl;
                                if(a_set == true)
                                     break;
				
			}
                        if(a_set == true)
                             break;
		 }
                 if(a_set == true)
                     break;
	 }
	 
	Sleep(1000);
	 cout << "THE END" << endl;

        cout << "still waiting for input" << std::endl;
        keyboard_checker.join();
	 
	return 0;
}
taguroFTW (14)
Is the code that you posted working? Compiled it and got tons of error. I think it's because of my compiler?

I haven't been into threads before! I think I need some help X_X
Last edited on
Gamer2015 (810)
Yeah it's working but you need some ... libraries and flags
If you are using g++ and the commandline to compile you could do it like this:
g++ -std=c++11 -pthread main.cpp
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