说明：  在TC中,图形都最多只能在640X480的分辩率下编程,本源程序说明如何用C语言编写高分辩率的图形程序!----只说明如何初始化为高分辩率,其它算法功能都是相同的!
(in TC, the graphics are only in the most easily visible outdoors under the Resolution Program, the source how to use C language to prepare high-resolution graphics only hostile to procedures on how to initialize the high-resolution, the other arithmetic functions are the same!)