OpenGL/ C program that draws a polygon – custom papers

OpenGL/ C program that draws a polygonneed a program that allows the user to draw a 2D polygon in an OpenGl window, using the mouse then to draw an other polygon with a different color on top of the previous one, to play the role of a hole. The user should also be able to moved/drag the polygon, with the mouse, if he clicked inside the polygon and not on the hole.This needs to be programmed in C not C++
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