Start by being specific about what x and y are
http://www.wotsit.org/ has lots of info on file formats
Start by being specific about what x and y are
http://www.wotsit.org/ has lots of info on file formats
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.