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Alf P. Steinbach
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 Posted: Sat Feb 28, 2004 8:58 pm Post subject: Re: Confusing error ?!?! |
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* "dwaonng" <dwaonng1234 (AT) yahoo (DOT) com> schriebt:
| Quote: |
im working on a prgm to do LZW compression
In a file I stored a character with the code: 26(binary:00011010)
when I try to retreive the code from the file I get the int value -1
and(binary:11111111111111111111111111111111), why is that!??!
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That's a feature of the compiler, library and/or operating system you're
using (for example, in MS-DOS a Ctrl Z marks end-of-file for a text file),
which standard C++ very unfortunately not only allows but encourages --
give me a whip and the committee members, and I'll whip 'em for you, very
enthusiastically.
To avoid this problem use binary file mode, not text mode.
| Quote: | Is it possible to get the character code 26 back from the file it
was stored in?
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Yes.
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dwaonng
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| Posted: Sat Feb 28, 2004 9:00 pm Post subject: Confusing error ?!?! |
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im working on a prgm to do LZW compression
In a file I stored a character with the code: 26(binary:00011010) when I try to retreive the code from the file I get the int value -1 and(binary:11111111111111111111111111111111), why is that!??! Is it possible to get the character code 26 back from the file it was stored in?
I know the character value is 26 definitely but using getc() doesnt give me the correct value back. Also that the character code 26 represents SUB (no idea).
#include <iostream.h>
#include <stdio.h>
void main()
{
FILE *input=fopen("1.txt","r");
cout << "n(getc(input): " << (int) getc(input);
fclose(input);
}
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Poiquiop
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| Posted: Sat Feb 28, 2004 9:12 pm Post subject: socket programming |
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Hi. I was wondering if there were any good tutorials related to socket
programming, and handling different protocols, etc.
Thanks,
J.L.
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