Total Expenditure of month program in c#.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace cp_theory_task_paractise

{

    class Program

    {

        static void Main(string[] args)

        {  

            int travel, stat, lunch, tday = 0, texp = 0, day = 0, ts = 0, tt = 0, tl = 0;

            do

            {

                Console.WriteLine("Enter Travel Exp of day:{0}", day + 1);

                travel = Convert.ToInt32(Console.ReadLine());

                tt = tt + travel;

                Console.WriteLine("Enter Stationary Exp of day:{0}", day + 1);

                stat = Convert.ToInt32(Console.ReadLine());

                ts = ts + stat;

                Console.WriteLine("Enter Lunch Exp of day:{0}", day + 1);

                lunch = Convert.ToInt32(Console.ReadLine());

                tl = tl + lunch;

                tday = ts + tl + tt;

                Console.WriteLine("day{0} exp:{1}", day + 1, tday);

                ++day;

            }

            while (day < 7);

            texp = tt + ts + tl;

            Console.WriteLine("Total exp of week:{0}", texp);

            texp = texp * 4;

            Console.WriteLine("Total exp of month:{0}", texp);

}

}

}