C语言实现的交互式绘图系统，图形用户界面，有橡皮筋法画直线、画圆、画Bezier曲线、裁剪等功能，用户可自行增加其他功能。-C language interactive mapping system, the graphical user interface, a rubber-band linear paintings, Circle, Bezier curve drawing, cutting and other functions, users may add other function