Implementing Trial Scheme.[help]

Question

1.00/5 (1 vote)

See more:

hi,

im trying to make a program that will only run for 50 times.
here's the sample of my code

config.ini

C++

[Trial]
Value=1

main.cpp

C++

string str = parse.get <std::string>("Trial.Value");
    int i;
    stringstream(str) >> i;
    
    if(i >= 51){
         exit(1);
         }else{

 
    int a = i + 1;    // problem here is it can only work once, after that it will                  
                      //stop adding. so im stuck with Value=2
    
    stringstream ss;
    ss << a;
    
    ofstream file("config.ini");
    file << "[Trial]";
    file << "\nValue=";
    file << (ss, ios::ate); //problem here (i think)..no matter what value i put
                            // in sample.ini for example Value=25 ...the output 
                            //will still be Value=2

    file.close();

what i want to do here is every time i will open this program it will add +1 in Value=1 until it reaches Value=50..please any way to do this?

thanks in advance

Posted 19-Aug-12 10:23am

Ronni2013

Updated 19-Aug-12 10:33am

v5

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Accepted Answer · 2012-08-19T14:24:00

Clearly, this is not a hard scheme to crack. Given that you don't read it as an ini file, why not write a random stream of bytes, and come up with a way that the content all changes, so no-one can tell which byte is the one you're reading ( for example, use a hash and encode your sequence somehow so that it's not 1-50, for example if you create a random number generated with a hard coded seed, you can reproduce that sequence to count to what the 50th value is ).

I don't know off hand why this is not working, but if you change your code to something that might actually survive attempts to crack it, along the way you will probably find that you'll write something that works.