C++ 继承访问


访问说明符

你从访问说明符本章介绍了 C++ 中可用的三个说明符。到目前为止,我们只使用过public(类的成员可以从类的外部访问)并且private(成员只能在类内部访问)。第三个说明符,protected, 类似于private,但也可以在遗传类:

示例

// Base class
class Employee {
  protected: // Protected access specifier
    int salary;
};

// Derived class
class Programmer: public Employee {
  public:
    int bonus;
    void setSalary(int s) {
      salary = s;
    }
    int getSalary() {
      return salary;
    }
};

int main() {
  Programmer myObj;
  myObj.setSalary(50000);
  myObj.bonus = 15000;
  cout << "Salary: " << myObj.getSalary() << "\n";
  cout << "Bonus: " << myObj.bonus << "\n";
  return 0;
}
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