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Hello,
I know 1 way of making a program which prints its own source code! And that is, first i save the source code and open that file only and print it :)
But i dont want that. What i want is without saving the source code it should print its own source code! Is it possible?and if yes then how?please tell me??
Not possible. Source code is not stored in the compiled executable.
You might be able to do it with some kind of pseudo-macro, but that would be compiler dependent (and ugly).
Why would you want to do it anyways?
Im kind of a noob but would it not be possible to store the code using File I\O and then print it
Yes, it is possible. Search the web for quine.Quote:
What i want is without saving the source code it should print its own source code! Is it possible?and if yes then how?please tell me??
Fun, laughter, peace and joy.Quote:
Why would you want to do it anyways?
hahahahahueheh laserlight! Yes why would anybody want to do it?you're right!
But this is an interview question. When we go for interview we can't ask the interviewer this question! like why would you want to do it?for fun?peace?laughter and joy?can we??
http://www.techinterviews.com/?p=317
If someone asked such a stupid question during an interview, first I'd ask them why they'd want to do that, then I'd wonder if it's the right place for me to work.Quote:
Originally Posted by chottachatri
The question is not so stupid. Everyone with the "classical" programming education is aware of such program. So if the person learns about it during interview it can indicate possible "shortcuts" in his education curve... And this can be futher investigated with other questionsQuote:
If someone asked such a stupid question during an interview
vart! yeah it's a classical programming question. Hey please tell me how to do it?is it possible or not?since the source code that we are making is residing in memory only i believe there has to be a way out. If we can know at which memory location the source code is currently running we can assign it's address to some character pointer variable..it's just a guess please if you know then tell me
i know 1 method as i said but that's a simple file reading and printing on console. But i dont want that the source code should be on hard disk...it should be in memory only and be displayed on console..
Eh, I told you to search for quine, apparently you did, and you even posted a link to a page that has a solution. What more do you want?
but laserlight what does this mean??
Code:char*f="char*f=%c%s%c;main()
{printf(f,34,f,34,10);}%c";
main(){printf(f,34,f,34,10);}
this solution simply copies the whole source code that is written in main again in some pointer variable and prints it! whats the sense of doing that? :o
To solve the problem. It requires a little tweaking to be standard C++ code, of course.Quote:
whats the sense of doing that?
It is not residing in memory, unless you read from the source file, which you do not want to do. You forgot that the source code is compiled into object code.Quote:
since the source code that we are making is residing in memory
So now will you tell me how to do that?or like that day you will start giving answer in round about manner??
As in tweak the example to be standard C++?Quote:
So now will you tell me how to do that?
And i know the source code is compiled into object code. But will you please tell me how will the object code be build??if we are making the source code for the 1st time.That means during compilation there's no .obj file on hard disk!i hope you getting my point??the object file that doesn't exist at all..can we assign it's address to some file pointer?? ;)
It will do if it's not following the rules. I just want to do the job of printing the source code..