Plotting graphs using matplotlib in c++ in windows machine.
First install latest version of python.
Install numpy and matplotlib using command prompt.
Install minGW G++ for compiling c++ programs (https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/).
Set virtual environment of mingw\bin in both system and variable path.
Dowload the main.cpp (cpp file name) and matplotlibcpp.h (header file name) from Download_This_Content directory.
Open command prompt and change directry to the directory where you have downloaded main.cpp (cpp file name) and matplotlibcpp.h (REMEMBER BOTH MAIN.CPP[CPP FILE NAME] AND MATPLOTLIBCPP.H SHOULD BE IN SAME DIRECTORY).
Compile the main.cpp (cpp file name) using command prompt and include python, numpy and matplotlib libraries.(for more detail check the "Location" and Example_of_location files)
Then a file .exe will create on same directory where your command prompt set.
Open it using command prompt by typing his named along with extension.
Then a pdf will generated on same location if pdf is not generated then a image will show.
Finally your graph will be in front of your eyes.
For more informations https://matplotlib-cpp.readthedocs.io/en/latest/index.html