translating external files type thing

[Quentin Bock]

okay, so I'm making a translating program, and I have files set to be
translated (they're in Icelandic) and I want all of them to be read in
English but I'm not sure how to open the files and translate them at the
same time. I'm also not even sure how to translate an external file
to English from another language.
I can't show code for this because I don't know if it's possible to do what
I'm asking.
Hopefully, this question is understandable
Thanks