Calculator

a simple expression Calculator written in c++

How to compile code

install cmake and gcc

1. sudo apt-get install cmake build-essential
   
2. cmake . && make
   

support command

use !help command to list command
!help
Recognized commands
!help
!quit
!v //list all variables
!f //list all support functions
!load filename //load variable from a file
!save filename //save variable to a file