Array Homework

array.cs

// Hello and welcome to the Array Homework program. This program is designed to demonstrate the use of arrays in C#.
// The program will create an array of 3 names, store them in an array variable
// prompt the user for a number to select a name from the array
// display the name selected by the user
// and check for invalid numbers entered by the user.
// The program will also demonstrate the use of a do while loop to display the names in the array.

string[] names = new string[3] { "John", "Jane", "Joe" };
int nameIndex;

Console.WriteLine("Hello and welcome to the Array Homework program.");
Console.WriteLine("This program is designed to demonstrate the use of arrays in C#.");
Console.WriteLine("The program will create an array of 3 names, store them in an array variable");
Console.WriteLine("prompt the user for a number to select a name from the array");
Console.WriteLine("display the name selected by the user");
Console.WriteLine("and check for invalid numbers entered by the user.");
Console.WriteLine("The program will also demonstrate the use of a do-while loop to display the names in the array.");

Console.WriteLine("\nPlease enter a number between 1 and 3 to select a name from the array:");

// Get the user input
string userInput = Console.ReadLine();
Console.WriteLine("");

// Check if the user input is a valid number using the TryParse method in a do while loop

do
{
    if (int.TryParse(userInput, out nameIndex) && nameIndex >= 1 && nameIndex <= 3)
    {
        Console.WriteLine($"The name at index {nameIndex} is {names[nameIndex - 1]}.");
        break;
    }
    else
    {
        Console.WriteLine("Invalid input. Please enter a number between 1 and 3:");
        userInput = Console.ReadLine();
    }
} while (true);