/*
 * C# Program to Obtain the Character from the User and Convert the Case of the Character
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace casechange
{
class Program
{
    static void Main(string[] args)
    {
        char a;
        int i;
        Console.WriteLine("Enter the Character : ");
        a = Convert.ToChar(Console.ReadLine());
        i=(int)a;
        if (a >= 65 && a <= 90)
            {
                Console.WriteLine("The Character is : {0}", char.ToLower(a));
            }
        else if (a >= 97 && a <= 122)
            {
                Console.WriteLine("The Character is : {0}", char.ToUpper(a));
            }
        Console.ReadLine();
    }
}

/*

Enter the Character : a
The Character is : A