printf itself

[mickey]

Hi,
I want to write a program that print its code. I saw the solution one time but it's wrong and I don't understand it. It's in C (but I use .Net compiler) (and if anyone know a solution in C++ or other language too, I'll happy).
See this....(don't ask me about char(38) please..I don't know).
How is the solution, please?

thanks..

[Michiel]

The Quine Page

[mickey]

it seems that my iostream (.net2005) doens't contains method 'form' for cout (cout.form).
Is one other "C++" way to print? (apart printf). thanks.

[Brandybuck]

it seems that my iostream (.net2005) doens't contains method 'form' for cout (cout.form).
Is one other "C++" way to print? (apart printf). thanks.

I don't know any of this newfangled .NET stuff, but in C++ the standard way to print to standard output is with iostreams and the redirection operator.

cout << "Hello world!" << endl;

You can do the same with any other iostream derived object, including file streams.

[mickey]

I need a function C++ like printf to use char %c %s inside it.
cout.form was able to do this; But it seems vanished.

[marcel]

If you want your application to print its code, then the worst possible solution is the one you are using: store the code as a string in the actual code.

A better solution is to make the application store the code(by parsing the source files)in a separate module that will be distributed also. The module should preferably be encrypted, so only trusted users can see the code.

[Michiel]

That's cheating.

[wysota]

What do you need it for anyway?

[mickey]

What do you need it for anyway?

here, http://www.nyx.net/~gthompso/self_c++.txt
as Michiel said, there is what I need. But as you can see there is the use of cout.form, and my compiler seems don't know it. I could use the printf but I'm looking for a pure c++ function where I can use %c %s characters....

[wysota]

But it doesn't say what you need it for

[mickey]

But it doesn't say what you need it for

I don't understand 'for': I need it to write a program that print its code. Have you see in the example link how cout.form is used? Is there a similar function that work as it?

[wysota]

I don't understand 'for': I need it to write a program that print its code.

Is it just for fun? For school? For any practical use? I'm just curious.

Is there a similar function that work as it?

try std::string and its sprintf method (I think it has one). Then you can redirect the result to cout.

[mickey]

OK!! It is just for fun. But I think your target in your question was another. Is it so? I'm curious too.....
But I don't find fprintf method in string; but if it's used to write on a file as said before it's a cheat...

[wysota]

OK!! It is just for fun. But I think your target in your question was another. Is it so? I'm curious too.....

No... I don't think so.

But I don't find fprintf method in string; but if it's used to write on a file as said before it's a cheat...

sprintf not fprintf. You sprintf what you want to printf into a string and then "printf" it (by redirecting) to cout

Something like:

std::string str;
str.sprintf("Format %s", "xyz");
std::cout << str << std::endl;

std::string str;
str.sprintf("Format %s", "xyz");
std::cout << str << std::endl;

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Just make sure std::string::sprintf really exists.

[mickey]

it doesn't exist as part of string....(at least in .net); but I wonder where's the "form" method....