图形用户界面（GUI）演示常见的二维函数图形。菜单条中含有5个菜单项：Plot、Option、LineStyle、Color和Quit。Plot中有Sine Wave、tsin(3t) Wave、2*exp(-0.5*x).*cos(pi*x) Wave、四页玫瑰曲线、阿基米德螺旋曲线和心形曲线六个子菜单项，分别控制在本图形窗口画出相应曲线。-Graphical user interface (GUI) shows the common two-dimensional graphics functions. Menu bar contains five menu items: Plot, Option, LineStyle, Color, and Quit. Plot of a Sine Wave, tsin (3t) Wave, 2* exp (-0.5* x) .* cos (pi* x) Wave, 4 rose curve, Archimedes spiral curve and the heart-shaped curve of the six sub-menu items were controlled in the graphics window to draw the corresponding curve.