using System;
//csc string_substring.cs
//str.Substring(startposition, numberofcharacters);
namespace string_SubString
{
public class SubString
{
public void search(string s)
{
string str = s ;
Console.WriteLine("string is " + str.Length + " long" );
Console.Write("Enter start location : ");
int n1 = int.Parse(Console.ReadLine());
Console.Write("Enter nubmer of letter : ");
int n2 = int.Parse(Console.ReadLine());
if((n1 !=0) || (n2 !=0))
{
//string s2 = str.Substring(n1,n2);
Console.WriteLine(str.Substring(n1,n2));
}
}
} //end class SubString
class test{
static void Main()
{
SubString sb = new SubString();
Console.WriteLine("Write a sentence below: ");
string str = Console.ReadLine();
sb.search(str);
}
}//end os class test
}