C# - Fibonacci Series

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I have given here a C# program that prints out Fibonacci Series. The logic for fibonacci series very simple. It starts with 0 and 1. The next subsequent term is the sum of the previous two terms.

 

 

Source Code

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using System;

using System.Collections.Generic;

using System.Text;

 

namespace Fibonacci

{

 

   class FibonacciSeries

   {

      static bool ReadInteger(out int n)

      {

         string input = System.Console.ReadLine();

         n = 0;

         try

         {

            n = Convert.ToInt32(input);

            return true;

         }

         catch (System.Exception ex)

         {

            System.Console.WriteLine("Error in the input format\n\n");

            return false;

         }

      }

      static void Main(string[] args)

      {

         int f1 = 0, f2 = 1, f3, n = 0;

         System.Console.WriteLine("Program for Fibonacci Series");

         System.Console.Write("Enter the maximum number for Fibonacci Series: ");

         ReadInteger(out n);

 

         System.Console.Write("\n\nPrinting Fibonacci Series from 0 - {0}\n\n", n);

         System.Console.Write("{0}\t{1}\t", f1, f2);

         while (true)

         {

            f3 = f1 + f2;

            if (f3 > n)

               break;

            System.Console.Write("{0}\t", f3);

            f1 = f2;

            f2 = f3;

         }

         System.Console.WriteLine("\n");

      }

   }

}

 

Output

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