static void PerCourseOption(Grades_Handler gH, Course_Handler cH) { foreach (Course course in cH.getAllCourses()) { float finalSum = 0; int studentCnt = 0; foreach (Grades grades in gH.getGradesFromCourse(course.getID())) { finalSum += grades.Grade_final; studentCnt++; } Console.WriteLine(course.getName() + "'s Average GPA: " + finalSum / studentCnt); Console.WriteLine("Press any key to continue...."); Console.ReadKey(); } }