1.　　 编写一程序实现任意文件的拷贝功能，源文件名和目的文件名由命令行参数提供。

2.　　 创建一个学生对象，并把它输入到一个文件（mytext.txt）中，然后再把该对象读出来，将其还原后打印出来。

-1. Write a program to achieve any file copy function, source file name and destination file name from the command line parameter. (2) create a student object and put it into a file (mytext.txt), and then then read out the object, its restored print.