inheritance_basic

#include<bits/stdc++.h>
using namespace std;

class Person
{
    string name;
    int age;
public:
    Person(string name, int age)
    {
        this->name = name;
        this->age = age;
        cout << "Constructor: Person Parameter\n";
    }
    void show()
    {
        cout << "Name: " << name << endl;
        cout << "Age: " << age << endl;
    }
    ~Person()
    {
        cout << "Destructing... Person: " << name << endl;
    }
};


class Result
{
    int theory;
    int seasonal;
public:
    Result() { cout << "Constructor: Result Default\n"; }
    Result(int theory, int seasonal)
    {
        this->theory = theory;
        this->seasonal = seasonal;
        cout << "Constructor: Result Parameter\n";
    }
    void setMarks(int theory, int seasonal)
    {
        this->theory = theory;
        this->seasonal = seasonal;
    }
    void getResult()
    {
        cout << "Theory: " << theory << endl;
        cout << "Seasonal: " << seasonal << endl;
    }
    ~Result()
    {
        cout << "Destructing... Result" << endl;
    }
};

class Student : private Result, public Person
{
    int id;
public:
    Student(string name, int age, int id, int theory, int seasonal) : Person(name, age)
    {
        this->id = id;
        setMarks(theory, seasonal); ///This is delegate function
        cout << "Constructor: Student Parameter\n";
    }
    void show()
    {
        Person::show();
        cout << "Id: " << id << endl;
        getResult();
    }
    ~Student()
    {
        cout << "Destructing... student: " << id << endl;
    }
};

class weakStudent : public Student
{
    int logs;
public:
    weakStudent(string name, int age, int id, int theory, int seasonal, int logs) : Student(name, age, id, theory, seasonal)
    {
        this->logs = logs;
        cout << "Constructor: weakStudent Parameter\n";
    }
    void show()
    {
        Student::show();
        cout << "Logs: " << logs << endl;
        cout << "This is a weak student\n";
    }
    ~weakStudent()
    {
        cout << "Destructing... weakstudent: " << logs << endl;
    }
};

class brilliantStudent : public Student
{
    double cgpa;
public:
    brilliantStudent(string name, int age, int id, int theory, int seasonal, double cgpa) : Student(name, age, id, theory, seasonal)
    {
        this->cgpa = cgpa;
        cout << "Constructor: brilliantStudent Parameter\n";
    }
    void show()
    {
        Student::show();
        cout << "CGPA: " << cgpa << endl;
        cout << "This is a brilliant student\n";
    }
    ~brilliantStudent()
    {
        cout << "Destructing... brilliantstudent: " << cgpa << endl;
    }
};

int main()
{
    weakStudent st("Tamim", 20 , 28, 50, 75, 10);
    st.show();
    brilliantStudent st2("RJ", 20 , 39, 300, 299, 3.99);
    st2.show();
}