Create a List item in SharePoint 2013 using CSOM in Visual studio

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.SharePoint.Client;
namespace GowthamSamples
{
    class Program
    {
        static void Main(string[] args)
      {
         // ClientContext - Get the context for the SharePoint Site
            ClientContext ctx= new ClientContext("http://gauti.sharepoint.com/sites/sp1/");
           / Assume that the web has a list named "Gowtham"
List announcementsList = ctx.Web.Lists.GetByTitle("Gowtham");

// We are just creating a regular list item, so we don't need to
// set any properties. If we wanted to create a new folder, for
.
ListItemCreationInformation itemCreateInfo = new ListItemCreationInformation();
ListItem newItem = announcementsList.AddItem(itemCreateInfo);
newItem["Title"] = "Gowtham's test Item!";
newItem["Body"] = "Hello C# Corner Users!";
newItem.Update();

context.ExecuteQuery();

       }
    }
}