Graphics in Turbo C++

C was the first programming language that I learnt during my graduation.And the IDE was Turbo C .It was a 16 compiler on a 32 bit machine.With very limited and old features.It also had some function that could draw lines , circles and polygons. I started drawing simple trigonometric function in that IDE. Print screen did't worked on that so I made functions that read all the pixels on the screen and store them into a BMP file.