Solve diamond inheritance c++

//add virtual to the middle subclass to make it a base class

#include<iostream>
using namespace std;
class Person {
public:
    Person(int x)  { cout << "Person::Person(int ) called" << endl;   }
    Person()     { cout << "Person::Person() called" << endl;   }
};
  
class Faculty : virtual public Person {
public:
    Faculty(int x):Person(x)   {
       cout<<"Faculty::Faculty(int ) called"<< endl;
    }
};
  
class Student : virtual public Person {
public:
    Student(int x):Person(x) {
        cout<<"Student::Student(int ) called"<< endl;
    }
};
  
class TA : public Faculty, public Student  {
public:
    TA(int x):Student(x), Faculty(x)   {
        cout<<"TA::TA(int ) called"<< endl;
    }
};
  
int main()  {
    TA ta1(30);
}

Source: geeksforgeeks.org

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