macOS how to get number of lines in terminal

[wala]

Is there any standard, cross-shell, and cross-platform way, in C, to get the number of lines one's terminal currently has?
I know the variable LINES is found in many shells, but is there a function which can be used to retrieve shell (not environment) variables?

 

[iMeowbot]

The standard way to do this is to use curses. The variable LINES will be defined after a newterm() or initscr().