Prac 1 Q4

namespace ConsoleApplication1
{
    class p5
    {
        static void Main(string[] args)
        {
            string name;

            int score;
            int sum = 0;
            int average = 0;
            int count;
            int loop = 3;
           char grade;
            Console.WriteLine("Enter number of students");
            count = Convert.ToInt32(Console.ReadLine());
            for (int j = 0; j < count; j++)
            {
                Console.WriteLine("Write name of student");
                name = Console.ReadLine();

                    for (int i = 0; i < loop; i++)
                          {
                              Console.Write("Enter Score:");
                              score = Convert.ToInt32(Console.ReadLine());
                              sum += score;
                              average = sum / 3;
                           }
                Console.WriteLine(" Average is {0}", average);
                if (average >= 75)
                    grade = 'A';
                else if (average >= 60)
                    grade = 'B';
                else if (average >= 50)
                    grade = 'C';
                else
                    grade = 'F';
                Console.WriteLine("Grade is {0}", grade);

                }
            }
        }
    }
}