tinycalc is a calculator. A tiny one. No, really; it's less than 20 lines of code.
tinycalc started as an experiment to play around with TinyExpr. It then evolved into a little calculator that I actually use. I used to use Python for calculations, now I use tinycalc.
tinycalc is written in pure C. It uses Linenoise for line editing and TinyExpr for evaluating mathematical expressions.
To build tinycalc, run make. This will result in the statically-linked
binary file named tinycalc. This should be able to run from any
location on any machine with the same Operating System and processor
architecture, so copy it to ~/bin, /usr/bin or any other location in
your PATH.