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***Back_track*** · (This post was last modified: 12-16-2009 09:16 AM by Back_track.)

Code:

using System;

using System.Collections.Generic;

using System.Text;

namespace Array_String

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Enter In Your String");//Prompt User

            string STR = Console.ReadLine();//Creates string variable

            Console.WriteLine("Enter in The Number of the Array Index you want displayed");

            int ind = Int32.Parse(Console.ReadLine());//integer "ind" is Console.ReadLine(User Input)

           if (ind > STR.Length - 1 )//if the integer is larger than the string's length 

                {

                    Console.WriteLine("Your Array Index is out of bounds");//Say it is 

                    System.Threading.Thread.Sleep(1000);//Wait a bit

                    Environment.Exit(1);//Exit

            }

            {

            }

            Console.WriteLine(STR[ind]);//write the strings array index value for example [2]

            Console.ReadLine();//Wait for Enter Key

        }

    }

}

Example Input:
Enter In Your String
Hello
Enter in The Number of the Array Index you want displayed
0
H
Notes
I compare the Indexes Number to the Strings Length and subtract one because the array index starts from 0

***drdebcol*** · 12-17-2009, 04:47 AM

Very easy and structured. It is good that you put condition. But this program doesn't cover everything. What if I enter negative number for example -1.
So if it is bigger than string length or smaller than zero.
Except this line:

Code:

if (ind > STR.Length - 1 )

you could add this :

Code:

if (ind > STR.Length - 1 || ind<0)