A simple program to ask the user to give any number and then the program will find the first and last digit using C# programming language.

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Program Listing

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1


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

            int num_val = 0;
            
            int last = 0;
            Console.WriteLine("\n");
            Console.WriteLine("\tFirst and Last Number in C#");
            Console.WriteLine("\n");
            Console.Write("\tGive any number: ");
            num_val = Convert.ToInt32(Console.ReadLine());
            last = num_val % 10;

            while (num_val >= 10)
            {
                num_val = num_val / 10;
            }

            Console.WriteLine("\n");
            Console.WriteLine("\tThe first digit : " + num_val);
            Console.WriteLine("\n");
             Console.WriteLine("\tThe last digit  : " + last);
            Console.WriteLine("\n");
            Console.WriteLine("\tEnd of Program");
            Console.WriteLine("\n");
            Console.ReadLine();
        }
    }
}

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