C vs C++ , C#

Question

Since C , C# ,C++ and others are general multi purpose programming languages, can we combine them on the same program?

Answer 1

HTML is not a programming language!!!

Answer 2

some consider it so Dejan Francuz🥇 , just a markup language

Answer 3

I like people who changes their question and think that they outsmarted those who answered right on their previous wrong question.