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C binary file strings are in clear text :S

General and Gameplay Programming Programming

Started by DJLink January 05, 2012 07:49 PM

4 comments, last by Sik_the_hedgehog 12 years, 3 months ago

DJLink

207

Author

January 05, 2012 07:49 PM

Hi there.
I remember writing files to binary a couple of years ago but now I can't seem to be able to do it.

I'm using this code on a console application



FILE *fp;

fp=fopen("test.bin", "wb");

char x[10]="ABCDEFGHI";

fwrite(x, sizeof(x[0]), 10, fp);

fclose(fp);

The problem is that opening the file with notepad I can still see ABCDEFGH in human readable form.
So what am I missing here?

Thanks

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SiCrane

11,840

January 05, 2012 07:51 PM

The binary representation of a string is the same as the text representation.

TheUnbeliever

963

January 05, 2012 07:54 PM

What were you expecting to see?

[TheUnbeliever]

Sik_the_hedgehog

3,003

January 05, 2012 08:45 PM

...it's the same thing.

For your information: the difference between text files and binary files has mainly to do with newlines (Windows uses CR-LF, everything else uses LF) and end of file (Windows will stop reading a text file when it sees character 26). C functions may do some filtering on text files (e.g. converting \r\n to \n). Binary files are read and written as-is, instead.

Don't pay much attention to "the hedgehog" in my nick, it's just because "Sik" was already taken =/ By the way, Sik is pronounced like seek, not like sick.

DividedByZero

1,261

January 05, 2012 08:58 PM

What do you expect? :S

Sik_the_hedgehog

3,003

January 05, 2012 09:51 PM

I just realized something: the code should be writting ABCDEFGHI\0, but he says he sees ABCDEFGH... What happened to the last two characters?

Don't pay much attention to "the hedgehog" in my nick, it's just because "Sik" was already taken =/ By the way, Sik is pronounced like seek, not like sick.

SimonForsman

7,644

January 05, 2012 09:57 PM