OOP-SOLID principle

  • Single Responsibility Principle (SRP)
  • Open-Closed Principle (OCP)
  • Liskov Substitution Principle (LSP)
  • Interface Segregation Principle (ISP)
  • Dependency Inversion Principle (DIP)
  • registerStudent
  • calculate_Student_Results
  • sendEmail

“every class should have only one reason to change”.

2.Open-Closed Principle (OCP)

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