说明：  本程序以自然界最平常的单摆现象为案例，利用计算机仿真中的典型四阶龙格-库塔法进行仿真，通过C语言的图形显示功能函数加以显示，实现C语言教学、计算机仿真教学与大学物理运动学知识的有机结合，理解简单应用系统的构思方法和实现方法。
(Nature of this procedure to the most ordinary pendulum phenomenon as a case, the use of computer simulation of a typical fourth-order Runge- Kutta method for simulation, through the C language function of the graphical display to show that the realization of C language teaching, computer simulation in teaching and University Physics kinematics of the organic integration of knowledge, understanding, simple application of the idea of the methods and realization method.)