using System;
class MainClass {
public static void Main() {
string str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
Console.WriteLine("str: " + str);
Console.Write("str.Substring(0, 15): ");
string substr = str.Substring(0, 15);
Console.WriteLine(substr);
}
}
str: ABCDEFGHIJKLMNOPQRSTUVWXYZ
str.Substring(0, 15): ABCDEFGHIJKLMNO