Write a program in C# to convert every odd position words into uppercase using StringBuilder

public string StrResult()
       {          
           var strBuilder = new StringBuilder();
            
            //input string
           string input = "Hello! i am learning c#. It is a nice language to start with and also has multiple features.one among them in stringbuilder";

            //split the string using space as a delimeter
            var inputArray = input.Split(' ');

            //find the length of the string
           int stringLength = inputArray.Length;

            Enumerable
                .Range(0, stringLength)
                .ToList()
                .ForEach
                (
                    i =>
                    {
                        if (i % 2 != 0) inputArray[i] = inputArray[i].ToUpper();
                        strBuilder.Append(' ' + inputArray[i]);
                    }
                );
            //return the value
           return strBuilder.ToString();
       }

 Hello! I am LEARNING c#. IT is A nice LANGUAGE to START with AND also HAS multiple FEATURES.ONE among THEM in STRINGBUILDER