See if arguments are present : Command Line : Development C# Examples

    
using  System;  
    
class  Cipher  {  
    public  static  int  Main(string[]  args)  {      
  
        if(args.Length  <  2)  {  
            Console.WriteLine("Usage:  encode/decode  word1  [word2...wordN]");  
            return  1;  //  return  failure  code  
        }  
  
        //  if  args  present,  first  arg  must  be  encode  or  decode  
        if(args[0]  !=  "encode"  &  args[0]  !=  "decode")  {  
            Console.WriteLine("First  arg  must  be  encode  or  decode.");  
            return  1;  //  return  failure  code  
        }  
  
        for(int  n=1;  n  <  args.Length;  n++)  {  
            for(int  i=0;  i  <  args[n].Length;  i++)  {  
                if(args[0]  ==  "encode")  
                    Console.Write("encode");  
                else    
                    Console.Write("Decode");  
            }  
            Console.Write("  ");  
        }  
  
        Console.WriteLine();  
  
        return  0;  
    }  
}