中文说明：开启和闭合操作，用 MATLAB实现开启和闭合操作，自己编写的程序，程序能够运行出正确的结果，希望对各位有帮助。
English Description：
Opening and closing operation, using MATLAB opening and closing operation, I have written a program, the program can run the correct result, I hope all of you have helped.