MS Word (or any other word processor) is for writing prose to be read by people, with nice formatting like bold and italic and underline - it is completely the wrong tool to use for writing 'C' source code!

The spelling & grammar checkers in MS-Word (or any other word processor) are for checking English (or whatever other) language spellings - they know nothing about the 'C' programming language!

You need to use a Text Editor for editing source files - Keil uVision includes a Text Editor.


Almost certainly!

At this stage, I think probably your best move would be to uninstall Keil, and start again from scratch. Remove all your .c, .h, and any other source files from the PC - especially anything you have touched with MS-Word!
(you migh want to keep a backup on CD or floppy or something).
Then, re-install Keil and BEFORE YOU DO ANYTHING ELSE, read the uVision Getting Started guide, and work through the example projects in it.

This will give you a proper introduction to the tools - including the text editor - and only then should you start fiddling with adding stuff to the device database.