Fibonacci Series using for loop in C#

using System;

    class Fibonacci

    {

        static void Main()

        {

            Console.WriteLine("Enter First No");

            int num1 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Enter Second No");

            int num2 = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Enter no of iteration you need");

            int range = Convert.ToInt32(Console.ReadLine());

            int result = 0;

            Console.WriteLine(num1);

            Console.WriteLine(num2);

            for (int i = 0; i <= range; i++)

            {

                result = num1 + num2;

                Console.WriteLine(result);

                num1 = num2;

                num2 = result;

            }

            Console.ReadLine();

        }

    }

 Dry run: 

DRY RUN
NOI=10	num1=1	num2=2
No Of Iteration	num1	num2	Result
1	1	2	3
2	2	3	5
3	3	5	8
4	5	8	13
5	8	13	21
6	13	21	34
7	21	34	55
8	34	55	89
9	55	89	144
10	89	144	233

 Output:-Enter First No

1

Enter Second No

2

Enter no of iteration you need

10

1

2

3

5

8

13

21

34

55

89

144

233

377

Loop: - Loop is mechanism which used to execute your statement till the condition become false.

Further loop can categories into two. 1)Range Based and 2)Condition Based.

                                                                                                                                          

Range Based:- In this case user/developer must aware range of iteration.  

Iteration 0 to 10.in this scenario we will go for loop.

For Loop:- This loop repeatedly executes  a group of  statements as long as a condition not become false.

Syntax:-for( int i=0;i<10;i++ or--)

{ Operation

}

For loop consist three importance parts.

1)      Initialization

2)      Condition

3)      Increment/ decrement.

Eg:-

( int i=0;i<10;i++ or--)

1       2            3

 .