Why does the compiler understand ASCII by default?
https://piefed.blahaj.zone/c/c_lang/p/804353/why-does-the-compiler-understand-ascii-by-default
Why does the compiler understand ASCII by default?
https://piefed.blahaj.zone/c/c_lang/p/804353/why-does-the-compiler-understand-ascii-by-default
Maybe this is a bit too much if you are just starting but read the first paragraph at least and then also look at "Relationship to ASCII" and "Relationship to Unicode"