Chief Delphi - Reference text file in C++

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E Dawg

12-07-2014 11:15

Reference text file in C++

I know that it is possible to reference a text file in C++ so that you are able to change variables without having to rebuild every time you want to change a constant. Does anyone know how to do that, and if so could you tell me how?

Thanks,
E Dawg

Jefferson

12-07-2014 12:35

Re: Reference text file in C++

Check out RAWCConstants.
It was developed by other FRC teams and we stole shamelessly. It's been super useful.

Edit: it was pointed out to me that I was violating the license agreement. I've removed the link to our repo. I'm not sue the official source for the tool. I wasn't part of our original implementation.

Joe Ross

12-07-2014 14:49

Re: Reference text file in C++

How much do you understand about file i/o in general?

SoftwareBug2.0

12-07-2014 15:26

Re: Reference text file in C++

http://www.cplusplus.com/doc/tutorial/files/

E Dawg

14-07-2014 09:32

Re: Reference text file in C++

Quote:

Originally Posted by Joe Ross (Post 1392866)

How much do you understand about file i/o in general?

Not that much. I've never really worked with it before.

connor.worley

14-07-2014 12:57

Re: Reference text file in C++

A simple way to do this in C++

Code:

#include <fstream>

#include <string>

#include <map>



...



std::ifstream constants("constants.txt");



std::map<std::string, double> data;



std::string name;

double value;



while(constants >> name >> value)

{



data[name] = value;

}

and a sample constants file

Code:

test 1

asdf 2.0

pi 3.14

negative -12.34

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