static void Main()
{
#region TASK_1 Demonstration
Console.WriteLine("Таблица функции a*x^2:");
SimpleFuncTable.Table(SimpleFuncTable.PowConst, -2, 1, 2);
Console.WriteLine("Таблица функции a*Sin(x):");
SimpleFuncTable.Table(SimpleFuncTable.Sinusoide, -2, 5, 2);
#endregion
Console.WriteLine();
#region TASK_3 Demonstration
foreach (StudentList student in StudentList.Age_CourseSort(StudentList.FileReader()))
{
Console.WriteLine($"{student.GetLastname} {student.GetName} {student.GetUniversity} {student.GetAge} {student.GetCourse}");
}
Console.WriteLine();
StudentList.StudentCoursesCounter(StudentList.FileReader());
Console.WriteLine();
List <StudentList> st = StudentList.FileReader();
StudentList.Age_CourseSort(st);
Dictionary <int, int> tr = StudentList.StudentsInfo(st);
foreach (int key in tr.Keys.ToList())
{
Console.WriteLine($"Студентов учащихся на {key} курсе: {tr[key]} человек.");
}
#endregion
}