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classWhileapp {//This is a server model that supports single-user     Public Static voidMain () {//Welcome information for printing SoftwareConsole.WriteLine ("Welcome to use Whileapp V0.1"); //Print command input characterConsole.Write (">"); //command to store the user's commands        stringcommand; //commands to read into the user//command exits the program for exit         while(Command = Console.ReadLine ())! ="Exit")        {            Switch(command) {//handling the Get command                 Case "Get": Doget ();  Break; //working with put commands                 Case "put": DoPut ();  Break; //Handling Default Commands                default: Dodefault ();  Break; }            //Print command input characterConsole.Write (">"); }    }    //handling the Get command    Private Static intdoget () {//to add a real get processing actionConsole.WriteLine ("get file ... ok"); return 0; }    //working with put commands    Private Static intDoPut () {//to add a real put processing actionConsole.WriteLine ("transfer files ... ok"); return 0; }    //Handling Default Commands    Private Static intDodefault () {//Print error messageConsole.WriteLine ("Command Error"); //prompt for correct usageConsole.WriteLine ("the set of commands supported by Whileapp V0.1 are:"); Console.WriteLine ("\tget:\t getting files"); Console.WriteLine ("\tget:\t Transferring Files"); Console.WriteLine ("\texit:\t Exit Program"); return 0; }}

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_09_while Cycle __