Same C++ code gives different result in MacOSX and Ubuntu

Hi
I have a C++ program which starts by reading an external file, but changing the name of the file give me different results.
I selected just the important part and made a simple file with the reading part of my program and can be downloaded here
http://dl.dropbox.com/u/664351/files.zip
It just reads the external file and does the output of some values.
It has two external file examples. If one uses "x.txt" everything works fine, but if we use "dados.txt", which is a copy of "x.txt", the last value in the output is wrong.
The stranger is that if i use these same files in ubuntu everything works just fine!
I tried in a MacBook, a MacBook Pro and an iMac (all of them with macosx 10.6) and i always got the error, but not on ubuntu!
Does anyone has a clue about what is happening here?
Cheers,
Marcelo

marcelobarbosa wrote:
Does anyone has a clue about what is happening here?
Change OutFile from a 20 byte character array to a string. GCC isn't able to tell what type that is and is picking int or something, corrupting your memory.

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