Setting Emacs to Split Buffers Side-by-Side

Question

A lot of Emacs functions automatically split the screen. However, they all do so such that the windows are one on top of the other. Is there any way to make them split such

Answer 1

Sometimes we need change between Horizontal and Vertical according current display and our requirement (more lines or more columns).

I recommand the great ToggleWindowSplit, And I bind key to "C-c y"

http://www.emacswiki.org/emacs/ToggleWindowSplit