C# Programme to check Armstrong Number

In the case of Armstrong number, the sum of the cube of each digit of the number should be equal to the original number.
for example- 153 
1*1*1+5*5*5+3*3*3 = 153.

using System;

namespace Armstrong_Number
{
    class Program
    {
        static void Main(string[] args)
        {

            int Number, Remainder, sum = 0, temp;
            Console.Write("Enter the Number   =  ");
            Number = int.Parse(Console.ReadLine());
            temp = Number;
            while (Number > 0)
            {
                Remainder = Number % 10;
                sum = sum + (Remainder*Remainder*Remainder);
                Number = Number / 10;
            }
            if (temp == sum)
            {
                Console.Write(+temp+" is a Armstrong Number.");
            }
            else
            {
                Console.Write(+temp+"  is Not a Armstrong Number.");
            }
            Console.WriteLine();
        }
    }
}

Output:-

Armstrong number

C # programme to print the fibonacci series

In case of fibonacci series, The next printed number is the sum of previous two numbers like 0,1,1,2,3,5,8,13,21 etc. The first two numbers of fibonacci series are 0 and 1.

using System;

namespace Fibonacci_series
{
    class Program
    {
        static void Main(string[] args)
        {
            
            Console.WriteLine("Enter Your target number");
            int Target_Number = Convert.ToInt32(Console.ReadLine());
            int First_Number = 0;
            int Second_Number = 1;
            int sum;
            Console.Write(+First_Number+" "+Second_Number);//print 0 and 1
            for (int i = 2; i < Target_Number; i++)//loop starts from 2 because 0 and 1 already printed
            {
                sum = First_Number + Second_Number;
                First_Number = Second_Number;
                Second_Number = sum;
                Console.Write(" " + sum);
            }
                Console.WriteLine();
        }
    }
}


OutPut:-
                     

Fibonacci Series

Programme to reverse a number

C# Programme to reverse a number....

using System;

namespace ReverseNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter a No. to reverse");
            int Number = int.Parse(Console.ReadLine());
            int Reverse = 0;
            while (Number > 0)
            {
                int remainder = Number % 10;
                Reverse = (Reverse * 10) + remainder;
                Number = Number / 10;
            }
            Console.WriteLine("Reverse No. is {0}", Reverse);
            Console.ReadLine(); 
        }
    }
}