[Help-nano] Having a problem with nano

[Jimmy Chivers]

I have written some small c code files. I use gcc for the compiling. After it is compiled, the file worked as it should. Then when I reopened the file and it is not usable or readable. It says “converted from mac format”. Can you tell me what is wrong and how to fix? This happens on Raspberry Pi computer and on a PC with Ubunto. Thanks Jimmy Chivers