Base and Derived Classes and Objects in C++ (With References and Pointers)

main.cpp

#include <iostream>
#include <string>

class Base {
protected:
	int value{0};
public:
	Base(int value) : value{value} {
		std::cout << "Base Constructor\n";
	}

	std::string getName() const {
		return "Base";
	}

	int getValue() const {
		return value;
	}
};

class Derived : public Base {
public:
	Derived(int value) : Base{value} {
		std::cout << "Derived Constructor\n";
	}

	std::string getName() const {
		return "Derived";
	}

	int getDoubleValue() const {
		return value * 2;
	}
};

void printDetails(const Derived& derivedRef) {
	std::cout << "printDetail by Reference\n";
	std::cout << derivedRef.getName() << " : " << derivedRef.getValue() << " : "
		<< derivedRef.getDoubleValue() << "\n";
}

void printDetails(const Derived* derivedPointer) {
	std::cout << "printDetail by Pointer\n";
	std::cout << derivedPointer->getName() << " : " << derivedPointer->getValue() << " : "
		<< derivedPointer->getDoubleValue() << "\n";
}

int main() {
	Base base{25};

	std::cout << base.getName() << " : " << base.getValue() << "\n";

	Derived derived{10};

	std::cout << derived.getName() << " : " << derived.getValue() << " : "
		<< derived.getDoubleValue() << "\n";

	const Derived& derivedRef{derived};

	std::cout << derivedRef.getName() << " : " << derivedRef.getValue() << " : "
		<< derivedRef.getDoubleValue() << "\n";

	printDetails(derived);

	const Derived* derivedPointer{&derived};

	std::cout << derivedPointer->getName() << " : " << derivedPointer->getValue() << " : "
		<< derivedPointer->getDoubleValue() << "\n";

	printDetails(&derived);

	Base& baseRefToDerived{derived};
	Base& baseRefToBase{base};
	Base* basePointerToDerived{&derived};

	std::cout << baseRefToBase.getName() << " : " << baseRefToBase.getValue() << "\n";
	std::cout << baseRefToDerived.getName() << " : " << baseRefToDerived.getValue() << "\n";
	std::cout << basePointerToDerived->getName() << " : " << basePointerToDerived->getValue() << "\n";

}