Desperate for help-file processing

I need to know how to prompt the user for a filename then open that file for reading.
Then, from that file, I need to calculate marks.
I don't understand how to do this, please help.

Start with reading class CFile or CStdiofile

You can use CFileDialog , and use the structure of that for the further processing....
this prompts you for the file name to be open ...

good luck
Samar