说明：   编写一个基于NetBIOS的数据报通信程序，要求：  发送端从键盘输入姓名，然后发送到接收端  接收端收到姓名后，在屏幕上显示  发送数据报和接收数据报均使用等待方式  发送端使用的NetBIOS名字为abc+自己学号(如，abc20092412)，接收端使用的NetBIOS名字为xyz+自己学号(如，xyz20092412)
( write a NetBIOS datagram-based communication program requirements:  sender name from the keyboard, and then sent to the receiving end  receiver receives the name after the data displayed on the screen  send and receive datagrams are reported using the standby mode  sender uses the NetBIOS name for the abc+ own student number (eg, abc20092412), the receiver using the NetBIOS name for the xyz+ own student number (eg, xyz20092412))