Program.cs

string roleName = "";
string? readResult;
bool validInput = false;

Console.WriteLine("Enter your role name (Administrator, Manager, or User)");

do
{
    readResult = Console.ReadLine();
    roleName = readResult.Trim();

    if (roleName.ToLower() == "administrator" || roleName.ToLower() == "manager" || roleName.ToLower() == "user")
    {
        validInput = true;
    }
    else{
        Console.WriteLine($"The role name that you entered, \"{roleName}\" is not valid. Enter your role name (Administrator, Manager, or User)");
    }
    

} while(validInput == false);

/* Here we are making the first letter in the word uppercase and the rest lowercase */
string capitalized = char.ToUpper(roleName[0]) + roleName.Substring(1).ToLower();

/* Printing the success message on the console */
Console.WriteLine($"Your input value ({capitalized}) has been accepted.");