I know c# in a high level and wanted to know,what language to learn next?what is most useful for a job and for university learning?and does learning C important?
I can suggest you C++ (that.has all features of C but allow to use OOP a better programmin paradigm but this is relative) and learn some about Computer Architecture and principles
First not everyone must code kernels, os and very low level (and you must learn assembly and overall computer architecture)... Second not exists a best language... They are all tools... There are tools more useful in some contexts and others less useful but at core its importants that you understand cs principle ... Languages apply this principles in practice
