using System;

​

namespace task_8_string_functions

{

    public class Program

    {

        public static void Main(string[] args)

        {

            //finding length

            string str = "sakthivel";

            Console.WriteLine("my name is " + str);

            int length = str.Length;

            Console.WriteLine("length=" + length);

            //concatination 

​

            string str1 = "india";

            Console.WriteLine("first string"+str1);

            string str2 = "is my country";

            Console.WriteLine("second string:"+str2);

            string totalstring = string.Concat(str1,str2);

            Console.WriteLine("totalstring:" + totalstring);

​

​

            //index of 

            string str3 = "sakthivel";

            int replay = str3.IndexOf('s');

            Console.WriteLine(replay);

​

            //to upper

            string sak = "sakthivel";

            string rep = sak.ToUpper();

            Console.WriteLine(rep);

​

​

        }

    }

}

​