Code:
  public static int StringMatch(string baseStr, string compStr)        {
            //bool b = false;
            int count = 0;
            //int index = 0;
            for (int i = 0; i < baseStr.Length; i++)
            {


                for (int j = 0; j < compStr.Length; j++)
                {


                    if (baseStr[i] == compStr[j])
                    {
                        count++;


                    }
                    if (count == compStr.Length)
                    {
                        return i - compStr.Length + 1;


                    }


                }


            }
            return -1;


        }


        static void Main(string[] args)
        {


            string txt = "dhgrogood";
            string phrase = "good";
            int res = StringMatch(txt, phrase);
            Console.WriteLine(res);
        }
    }
}