using System;

​

public class Program

{

    public static void Main()

    {

        int[, ] grades = {{1, 80, 90, 100, 80}, {2, 70, 65, 90, 100}, {3, 50, 49, 80, 62}}; //stores all the grades in a 3 by 5 array

        int sum = 0; //declares sum to be used later for averages

        for (int i = 0; i < grades.GetLength(0); i++) //goes through each row

        {

            for (int j = 1; j < grades.GetLength(1); j++) //goes through each column

            {

                sum = sum + grades[i, j]; //adds up numbers from the cells of the array

            }

​

            int avg = sum / (grades.GetLength(1) - 1); //divides the sum by the number of columns -1

            Console.WriteLine("Person #" + grades[i, 0]+"  has an average of " + avg); //outputs the grades of each person

            if (avg < 65)

                Console.WriteLine("They failed for the quarter."); 

            //if someone gets under a 65, the message that they have failed for the quarter appears

            sum = 0; //sum is reset to 0 at the end

        }

    }

}