public static void updateCourseMenu() { Console.Clear(); Console.WriteLine("Please input the course name:"); String courseName = Console.ReadLine(); Console.WriteLine("Please input the course credit:"); int credit = InputValidation.checkCredit(Console.ReadLine()); Console.WriteLine("Please input the course max student:"); int maxStudent = InputValidation.checkCredit(Console.ReadLine()); school.updateCourse(courseName, credit, maxStudent); Console.WriteLine("Press any key to continue"); Console.ReadLine(); }