topic Re: Reading a binary file in C++ and determining EOF in Operating System - HP-UX

Reading a binary file in C++ and determining EOF

Kimberly Lewis — Thu, 07 Feb 2002 18:59:02 GMT

When using C++ to read a graphic (binary) file that may contain characters equivilent to EOF marker, how can I be certain that I have reached the end of file?

Re: Reading a binary file in C++ and determining EOF

A. Clay Stephenson — Thu, 07 Feb 2002 19:28:19 GMT

Hi Kimberly:

I assume that this is a UNIX question. There is no EOF character, one simply reads until no data is left.

Re: Reading a binary file in C++ and determining EOF

Chris De Angelis — Fri, 08 Feb 2002 13:05:53 GMT

And to know you've read to the end of the file, perhaps you need to do a check of your current position relative to the size of the file. Or just keep reading until your read returns an error.

Are you using a good spec of the particular graphic file format you are trying to read in?

Re: Reading a binary file in C++ and determining EOF

harry d brown jr — Fri, 08 Feb 2002 13:21:15 GMT

Like Clay said, there is no EOF characters, only a condition where your read returns an EOF.

Does this make sense?

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harry