Improve your knowledge of so, neither, either, too in this English Grammar Blog
In English, as in any language, we can use short answers to questions or statements.
But sometimes short answers can sound angry or offensive, for example the other day on the tube here in London I overheard the following short and angry conversation:
Tube Traveller One: “Are you going to stay late in work today?”
Tube Traveller Two: “Yes”