using System;

​

public class Marksheet

{

    public static void Main(string[] args)

        {

            int i, a, reg, tam, eng, math, sci, soc, total;

            float avg;

            string name;

            Console.WriteLine("\t\tSTUDENT MARKLIST\n");

            Console.WriteLine("\t\t****************\n");

            Console.WriteLine("Enter the number of students:");

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

            for (i = 0; i < a; i++)

            {

                Console.WriteLine("Enter Reg Number :");

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

                Console.WriteLine("Enter Student Name :");

                name = Console.ReadLine();

                Console.WriteLine("Enter tam : ");

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

                Console.WriteLine("Enter eng : ");

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

                Console.WriteLine("Enter math : ");

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

                Console.WriteLine("Enter sci : ");

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

                Console.WriteLine("Enter soc : ");

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

                total = tam + eng + math + sci + soc;

                avg = total / 5.0f;

                Console.WriteLine("Total : " + total);

                Console.WriteLine("Percentage : " + avg);

                if (avg < 35)

                {

                    Console.WriteLine("Grade is D");

                }

                if (avg >= 35 && avg < 50)

                {

                    Console.WriteLine("Grade is C");

                }

                if (avg >= 50 && avg <= 69)

                {

                    Console.WriteLine("Grade is B");

                }

                if (avg > 69 && avg <= 90)

                {

                    Console.WriteLine("Grade is A");

                }

                if (avg > 90 && avg <= 100)

                {

                    Console.WriteLine("Grade is A+");

                }

                Console.ReadLine();

            }

        }

}