Question about reading files

[ny2nj2mia]

Hello, I have run into something odd and wanted to know if anyone could help me. I have written a program which opens a file for reading and utilizes “inFile.eof().” I open the file, read until the end of the file, close it, and then open it again to again read from beginning to end. When I run the program on my laptop, inFile.eof() returns false WHEN I OPEN THE FILE THE SECOND TIME (The position is at the beginning of the file). However, when I go to school and use one of the computers there, inFile.eof() returns true when I open the file the second time (the position remained at the end even though I closed the file and re-opened it). Why could this be?