I need to be able to save stuff from my terrain editor and basically thi is what it does: use fprintf to put out header info, then I want to output a long sequence of short integers for heightmap data, followed by a long sequence of BYTEs. However if you use fprintf to put out shorts, you have to put a space or newline between them. I tried using fwrite to send out the data on a bit by bit copy to the file but that didn''t work. For the BYTEs I tried to use fputc, but when you put certain characters it screws things up trying to read them again. I basically want a mixture of fprintf/fscanf for bits that are human readable i.e map size etc, and a load of bytes for other stuff. What''as the best way? If you want to discuss specifics, I have a 2d array of shorts called heights, 2d array of bytes called groundtypes and header variables height & width which need to go in the file like: Width: 1234 Height: 1234 before the rest of the stuff. John 3:16