C# program to find the Fibonacci Series

In this article we will show you how to write code for Fibonacci series using console application in c#.net using for loop:

Step1: Take a new console application using c# as a language in the Visual studio.

Step2: Declare a variable “int_No_of_term” for getting the Number of Term in the Fibonacci series.

Step3: Read an input from the User in this Variable.

Step4: Make an array for name “int_fibbo” of the size “int_No_of_term” for storing the fibonacci series values.

Step5: Assign the first and second value of the Fibonacci series in the array position 0 and 1 respectively. Print the first 2 number of the Fibonacci series.

Step6: now loop through till the last no in the series to calculate the next Fibonacci numbers using the logic nth series value= (n-1)th series value+ (n-2)th series value.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Fibonaci

{

    class Program

    {

        static void Main()

        {

           

            int int_No_of_term;

            Console.WriteLine("Enter the number of terms for the fibonacci series you    

                           want to print?");

      

            int_No_of_term = int.Parse(Console.ReadLine());

            int[] int_fibbo = new int[int_No_of_term];

            int_fibbo[0] = 0;

            int_fibbo[1] = 1;

            //for printing the first value of the fibonacci series

            Console.WriteLine(int_fibbo[0]);

            //for printing the second value of the fibonacci series

            Console.WriteLine(int_fibbo[1]);

            for (int i = 2; i < int_No_of_term; i++)

            {

                int_fibbo[i] = int_fibbo[i - 1] + int_fibbo[i - 2];

                //for print the fibonacci series from 3rd position till nth position

                Console.WriteLine(int_fibbo[i]);

            }

            Console.ReadLine();

       }

    }

}

Output:-