EOF on binary files

[ramako]

As far as I know, binary files doesn't exactly have an EOF, right? How can I find the end of a binary file?

[LB]

They do have EOF, actually. It's why the .get() function on streams returns an integer and not a character, so you can compare it to the EOF constant.

[ramako]

I actually coded this:

FicheroEntrada.seekg(0, ios::end);
size=(int) FicheroEntrada.tellg();
FicheroEntrada.seekg(0,ios::beg);
while(FicheroEntrada.tellg()<size){
.........

It does works, although I don't know what bugs/errors can come from this.

[Caligulaminus]

Should work fine.

[ne555]

http://www.cplusplus.com/reference/iostream/istream/read/

If the End-of-File is reached before n characters have been read, the array will contain all the elements read until it, and the failbit and eofbit will be set (which can be checked with members fail and eof respectively).

¿How are you reading the file?

@LB: dunno how the filesystem establish that you reached the end, but I don't think that it uses a special character. If that was the case, ¿how will you distinguish between EOF and data?

[LB]

It's why the .get() function on streams returns an integer and not a character, so you can compare it to the EOF constant.

_{*cough*not a character value*cough*}

[ne555]

You shouldn't smoke.
You perform a get(), and have as result EOF. That does not meant that the file has stored EOF.

[LB]

I never said that the EOF was in the file, just that they do have an EOF flag given by the OS.