The compiler, running under the Windows operating systems, expects the contents of your source file to consist of ASCII format and CR-LF type1. If you created your file on a workstation, the format should be correct; however, if you transfer a file from another machine environment, make sure that the file transfer utility does any needed translation (to ASCII and CR-LF).
The compiler can interpret characters that are in the range '00'X to '1F'X as control codes. If you use characters in this range in your program, the results are unpredictable.