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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. class Person
  6. {
  7. protected:
  8.     string m_name;
  9.  
  10. public:
  11.  
  12.     Person(const string &name)
  13.         : m_name(name)
  14.     {
  15.         cout << "Creating Person Class" << endl;
  16.     }
  17.  
  18.     void about_me()
  19.     {
  20.         cout << "I am a person, my name is " << m_name << endl;
  21.     }
  22. };
  23.  
  24. class Student : protected Person
  25. {
  26. private:
  27.     int m_id;
  28.     string m_school;
  29.  
  30. public:
  31.  
  32.     Student(const string &name, int id, const string &school)
  33.         : Person(name), m_id(id), m_school(school)
  34.     {
  35.         cout << "Creating Student Class" << endl;
  36.     }
  37.  
  38.     void about_me()
  39.     {
  40.         cout << "I am a student, my name is " << m_name << ", my id is " << m_id << " at " << m_school << endl;
  41.     }
  42. };
  43.  
  44. int main()
  45. {
  46.     Person* pperson = new Person("John Doe");
  47.     Student* pstudent = new Student("Jane Doe", 12345, "Some School");
  48.  
  49.     pperson->about_me();
  50.     pstudent->about_me();
  51.  
  52.     pperson-> about_me();
  53.  
  54.     ((Student*)pperson)-> about_me();
  55.  
  56.     delete pstudent;
  57.     delete pperson;
  58.  
  59. 	return 0;
  60. }
Runtime error #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
Creating Person Class
Creating Person Class
Creating Student Class
I am a person, my name is John Doe
I am a student, my name is Jane Doe, my id is 12345 at Some School
I am a person, my name is John Doe
https://ideone.com/eYLhSD
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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