dev-cpp-users

[Dev-C++] File Operations

[Gregor P. <Gre...@dl...>]

Can someone tell me how to open and write into a textfile (even into a
already opened one)
Is there under Windows something like  fprintf () ?

Thanx for answering :-)

Gregor

Re: [Dev-C++] File Operations

[<jos...@ya...>]

--- Gregor Peter <Gre...@dl...> escribió: > Can someone tell me
how to open and write into a textfile (even into
> a
> already opened one)
> Is there under Windows something like  fprintf () ?
> 

CreateFile()
ReadFile()
WriteFile()

I send as attachment one of Dev-C++ examples where those functions are
used.

I hope this help.

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Re: [Dev-C++] File Operations

[Gregor P. <Gre...@dl...>]

Hmm I am not shure if it is the answer to that what I need.

I don't want to prompt the user for file operations, I like to save some
programminternal values to a file.

For varialbes like:
int i = 0;
String valueID = "X";

I wanna get a Textfile that contain:
X = 0

By using something like:
fprintf ( fileID, "%c = %d", valueID, i );

I didn't figured out yet if  "WriteFile()" work the same way.

Thanx so far


Jose Manuel Padron Carrillo wrote:

> --- Gregor Peter <Gre...@dl...> escribió: > Can someone tell me
> how to open and write into a textfile (even into
> > a
> > already opened one)
> > Is there under Windows something like  fprintf () ?
> >
>
> CreateFile()
> ReadFile()
> WriteFile()
>
> I send as attachment one of Dev-C++ examples where those functions are
> used.
>
> I hope this help.

Re: [Dev-C++] File Operations

[Lorenzo <co...@in...>]

> By using something like:
> fprintf ( fileID, "%c = %d", valueID, i );
>
> I didn't figured out yet if  "WriteFile()" work the same way.

The api WriteFile() don't work like fprintf, but you can use api wsprintf()
to create the string to send to WriteFile(), the wsprintf work same way of
sprintf().

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then programming must be the process of putting them in.
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Re: [Dev-C++] File Operations

[<jos...@ya...>]

--- Gregor Peter <Gre...@dl...> escribió: > Hmm I am not shure
if it is the answer to that what I need. 
> I don't want to prompt the user for file operations, I like to save
> some programminternal values to a file.

You don't need to prompt the user if you don't like. It's just the
example I sent. So with some minor modifications you can get what you
need. 

> For varialbes like:
> int i = 0;
> String valueID = "X";
> 
> I wanna get a Textfile that contain:
> X = 0
> 
> By using something like:
> fprintf ( fileID, "%c = %d", valueID, i );
> 
> I didn't figured out yet if  "WriteFile()" work the same way.
> 

For WriteFile you need to pass a pointer to the string and the length
of it (among other parameters). So in your case you can do a wsprintf()
before and then pass the string as parameter for WriteFile().

Hope this helps.



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Re: [Dev-C++] File Operations

[Thomas J. <th...@zi...>]

At 11:38 21-6-2001 +0200, you wrote:
>  Hmm I am not shure if it is the answer to that what I need. I don't want
>to prompt the user for file operations, I like to save some
>programminternal values to a file. For varialbes like: 
>int i = 0; 
>String valueID = "X"; I wanna get a Textfile that contain: 
>X = 0 By using something like: 
>fprintf ( fileID, "%c = %d", valueID, i );   "WriteFile()" work the same

fopen, fprintf normally work under windows otherwise use wsprintf to format
a string and write to file
using WriteFile.

Thomas