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Source Code    Language
using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { string but = "BT"; for (int i = 1; i <= 20; i++) { if (i < 10) { but += "0" + i.ToString(); } else { but += i.ToString(); } Console.WriteLine(but); } Console.ReadLine(); } } }

Compiling Program...

Command line arguments:
Standard Input: Interactive Console Text
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                    Program is not being debugged. Click "Debug" button to start program in debug mode.
                        

                

                
                

                

                


            

        

    




                        
                    

                

            

            

            
                
                
                

                    

  

    

      

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#Description