下面有一个程序，让用户输入一些姓名和电话号码。每一个姓名和号码将加在文件里。用户通过点“Done"按钮来告诉系统整个列表已输入完毕。一旦用户输入完整个列表，程序将创建一个输出文件并显示或打印出来。-Here is a program that allows users to enter some name and phone number. Every name and number will be added in the document. Users through some "Done