Interactive Graphical System

In the earliest days of my programming career I wrote many simple-minded programs.

One of them - Interactive Graphical System (IGS), in that (х³+а₁у³+а₂х²у+а₃ху²+а₄х²+а₅у²+а₆ху+а₇х+а₈у+а₉=0) mathematical formula was implemented.



It was written on Borland C++, at university, many years ago...