using System;

public class Program

{

    public static void Main()

    {

StringPlace("Aez" , 2,3);

    }

public static void StringPlace(string mystr ,int a,int a1)

{

if(a > mystr.Length || a < 1 && a1 > mystr.Length || a1<1)

{

Console.WriteLine("خارج مجال التعريف");

}

else 

{

char n = mystr[a-1];

char n1 =mystr[a1-1];

string mystr1 = 'A' + mystr[a-1] + mystr[a1-1];

​

Console.WriteLine(mystr1);

}

​

}

}