5. В двухмерном массиве хранится информация о количестве студентов в той либо

Using System;

namespace Znanija
    internal class Program

        private static void Main()
            var r = new Random(DateTime.Now.Millisecond);
            var course = r.Next(1, 6);
            var students = new int[5,8];

            for (var i = 0; i lt; students.GetLength(0); i++)
                for (var j = 0; j lt; students.GetLength(1); j++)
                    students[i, j] = r.Next(10, 40);
                    Console.Write("0:d2 ", students[i, j]);
               
                Console.WriteLine();
           

            Console.WriteLine("На курсе 0 кол-во студентов = 1", course, CountStudents(students, course));
            Console.ReadKey();
       

        private static int CountStudents(int[,] students, int course)
            if (students.GetLength(0) lt; course)
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Нет курса " + course);
                return 0;
           

            var number = 0;
            for (var i = 0; i lt; students.GetLength(0); i++)
                number += students[course - 1, i];
           

            return number;