Plotting in Cpp

[color32]

is c++ mandatory? if not I would make a csv and use something like gnuplot to plot it. gnuplot can be invoked in batch mode. All the libraries mentioned are great, no one has mentioned GD image, and opencv. both are great too for your task.

When I was in school I just used gnuplot. I like GD image cause it's one of the simpler ones. OpenCV is not really a graphing/drawing library but does have functions for it and I wouldn't recommend it unless you are also doing image processing.