Time Script

[Xerogravity]

I'm currently having trouble finding out a way to run simulations automatically every 3 seconds. I've been working on a small simulation console game (At them moment) and I haven't been able to find any solution. All I'm trying to manage is a way to run a loop every 3 seconds and output the results on the screen -- I have the majority of the program written already I just need to input this specific function. Help would be appreciated.

[j3Rz8vqX]

Some ideas:

http://www.cplusplus.com/reference/thread/thread/
http://en.cppreference.com/w/cpp/thread/thread

Those links are self explanatory. Also, I like to invoke the use of self learning.

Hope this helps.

[Xerogravity]

Thanks this will keep me occupied for a while.

[long double main]

Does this loop need to run in the background (i.e. you can do other stuff while this loop is running), or are you okay with stopping your game for 3 seconds while you wait for it to run again?

If it's the latter, you can use the clock() function in <ctime> to idly loop for 3 seconds:

while (true)
{
    cout << "This message displays every 3 seconds" << endl;
    clock_t start = clock();
    double elapsedTime = 0;
    while (elapsedTime < 3)
        elapsedTime = (clock() - start) / CLOCKS_PER_SEC;
}

http://www.cplusplus.com/reference/ctime/clock/

If you need this to run in the background, then use std::thread like Dput mentioned above. (But note that you'll need a fairly recent compiler that supports C++11 features in order to use it)

[Xerogravity]

I've got something simple down at the moment and I'm hoping to build off of this and improve.

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

int Day = 1;
int main() {
	Day_Loop:
	cout<<"Day "<<Day;
	Day++;
		Sleep(2000);
	system("cls");
		goto Day_Loop;
	cin.ignore();
	return 0;

}

Very basic/choppy code -- I know.

I'd much like to see this code in a more "proper" form.

[j3Rz8vqX]

Ah, I've must have misinterpret your question.

I'm trying to manage is a way to run a loop every 3 seconds

long is right, use a timer >.<

Apologies for the inconvenience.

Thought it would be running parallel to your main process.

[Xerogravity]

I am actually looking for a way to do that too but I suppose I don't have that specific library. Thank you for leading me in that direction though.
I'll just have to get a more recent version of c++ I guess?

[Hippogriff]

The C++ threading functions are only supported on C++11 so you will need a compiler that is updated to run that. A quick search will tell you if what you are using can support it.

Otherwise I recommend you look up the Boost library for threading if you want your time-based function running parallel to everything else.

[j3Rz8vqX]

What platform are you using?

If windows, What IDE?

If Mingw or other IDEs that use the GCC compiler, you can verify your version in the command prompt/line using "GCC --version" without the quotes.

[long double main]

For GCC, you'll also need to enable C++11 features using either -std=gnu++11, -std=c++11, -std=gnu++0x, or -std=c++0x (at least one of those should work for you).

(Or, if you're using an IDE, find an option to enable C++11 features.)