main.dart

//============Syntax
class ParentClassOrSuperClass {
  // Parent class properties and methods
}

class ChildClassOrSubClass extends ParentClassOrSuperClass {
  // Child class properties and methods
}

// =================Parent class 
// =================Parent class
// =================Parent class 
class Person {
  // Properties
  String? name;
  int? age;

  // Method
  void display() {
    print("Name: $name");
    print("Age: $age");
  }
}


// =================Child class extending the Parent class
// =================Child class extending the Parent class
// =================Child class extending the Parent class
class Student extends Person {
  // Fields
  String? schoolName;
  String? schoolAddress;

  // Method
  void displaySchoolInfo() {
    print("School Name: $schoolName");
    print("School Address: $schoolAddress");
  }
}

void main() {
  // Creating an object of the Student class
  var student = Student();
  student.name = "John";
  student.age = 20;
  student.schoolName = "University of Lagos";
  student.schoolAddress = "University Road";
  student.display();
  student.displaySchoolInfo();
}