#include<iostream> using namespace std; class BaseClass1 { public: BaseClass1() { cout << " BaseClass1 constructor called" << endl; } }; class BaseClass2 { public: BaseClass2() { cout << "BaseClass2 constructor called" << endl; } }; class DERIVEDCLASS: public BaseClass1, public BaseClass2 { public: DerivedClass() { cout << "DerivedClass constructor called" << endl; } }; int main() { DerivedClass derived_class; return 0; }

Output:

Reason:
The above program demonstrates Multiple INHERITANCES. So when the Derived class’s constructor is called, it automatically calls the Base class's CONSTRUCTORS from left to right ORDER of INHERITANCE.