using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

​

namespace ConsoleApplication6

{

    class Program

    {

        static void Main(string[] args)

        {

            int code;

            string name;

            double test, midterm, final, total_score;

​

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

            Console.WriteLine(" Program Grade ");

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

​

            Console.Write(" Code    = ");

            code = int.Parse(Console.ReadLine());

            Console.Write(" Name    = ");

            name = Console.ReadLine();

            Console.Write(" Tast    = ");

            test = double.Parse(Console.ReadLine());

            Console.Write(" Midterm = ");

            midterm = double.Parse(Console.ReadLine());

            Console.Write(" Final   = ");

            final = double.Parse(Console.ReadLine());

​

            total_score = test + midterm + final;

            Console.WriteLine(" Totalscore  = "+ total_score);

            if(total_score >=0 && total_score <50)

            {

                Console.WriteLine(" Grade   = F ");

            }else

            if(total_score >=50 && total_score <55)

            {

                Console.WriteLine(" Grade   = D ");

            }else

                if(total_score >=55 && total_score <60)

            {

                Console.WriteLine(" Grade   = D+ ");

            }else

            if(total_score >=60 && total_score <65)

            {

                Console.WriteLine(" Grade   = C ");

            }else

            if(total_score >=65 && total_score <70)

            {

                Console.WriteLine(" Grade   = C+ ");

            }else

            if(total_score >=70 && total_score <75)

            {

                Console.WriteLine(" Grade   = B ");

            }else

            if (total_score >= 75 && total_score < 80)

            {

                Console.WriteLine(" Grade   = B+ ");

​

            }

            else

            {

                Console.WriteLine(" Grade   = A ");

            }

​

            Console.ReadKey();

        }

    }

}