Reading a binary file in C++ and determining EOF

[Kimberly Lewis]

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?

[A. Clay Stephenson]

Hi Kimberly:

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

[Chris De Angelis]

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?

[harry d brown jr · Accepted solution]

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