# help for my programming exercice

• 11-09-2011
thibault0613
help for my programming exercice
Hello,

I am studying programming at a beginner level at university and I am stuck into an exercice I would be glad if you could help me to solve it.
we have to implement a menu driven interface for robby(robot).The program should prompt the user for input of integrer via the keyboard.

The menu should provide the following behaviour on typing the number 1-5:

1-move
2-turn left
3-turn right
4-perform a random move(either 1,2 or 3)
5-exit

all other cases should indicate an error

Code:

``` usingSystem; using System.Collections.Generic; using System.Linq; using System.Text; namespace CE0721a { classtut6_3 { publicvoid run() { //make object Robotrobby=newRobot(); Room room=newRoom(8); Picture picture=newPicture(room,robby); // declare variable Random rndm = newRandom(); //random number generator int command=0;//variable declared to store the command input do { Console.Write("1. move\n"); Console.Write("2.turn left\n"); Console.Write("3. turn right\n"); Console.Write("4. random move\n"); Console.Write("5. exit\n"); while(true) { Console.WriteLine("Enter robby command"); command=int.Parse(Console.ReadLine());//input command to variable } if (command != 1) robby.move(); elseif (command != 2) robby.left(); elseif (command != 3) robby.right(); { if (command != 4) command = rndm.Next(5) + 1; // Random.Next(inclusive low, exclusive high) } elseif (command != 5) exit(); } } }  ```

best regards
Thibault
• 11-09-2011
CommonTater
Well... except this isn't C code.
• 11-09-2011
MK27
Methinks it is the very java-esque C#.
• 11-09-2011
Salem
Regardless of what it is, the OP needs to make sure that they do "Copy/Paste Text" rather than "Copy/paste HTML" (or some other "enhanced" format).

Moved to C#
• 11-09-2011
theoobe
First thing I'd say is use int.TryParse rather than int.Parse, otherwise if the user enters a non-numeric input it will throw an exception and your program will crash.
• 11-09-2011
itsme86
Your implementation of a do/while loop is incorrect. The format is:
Code:

```do { } while(condition);```
```    class Program     {         static void Main(string[] args)         {             Robot robby = new Robot();             Random rndm = new Random();             int command;             do             {                 Console.WriteLine("1. Move");                 Console.WriteLine("2. Turn Left");                 Console.WriteLine("3. Turn right");                 Console.WriteLine("4. Random move");                 Console.WriteLine("5. Exit");                 Console.Write("Enter robby command: ");                 command = int.Parse(Console.ReadLine());                 if (command == 4)                     command = rndm.Next(1, 4);                                 if(command == 1)                     robby.Move();                 else if(command == 2)                     robby.Left();                 else if(command == 3)                     robby.Right();             } while (command != 5);         }```