cppdemo/inheritance.cpp at main · bsclifton/cppdemo · GitHub

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#include <iostream>

#include <string>

class BaseClass {

public:

std::string name;

virtual std::string get_details() {

return name;

}

BaseClass(BaseClass const&) = delete;

/*BaseClass(BaseClass const& obj) {

name = obj.name;

std::cout << "copying BaseClass (" << this << ") " << std::endl;

}*/

BaseClass() {

std::cout << "creating BaseClass (" << this << ") " << std::endl;

}

virtual ~BaseClass() {

std::cout << "destroying ~BaseClass(" << this << ") " << std::endl;

}

};

class DerivedClass : public BaseClass {

public:

int age;

std::string get_details() override {

return name + " / " + std::to_string(age);

}

DerivedClass(std::string n, int a) {

std::cout << "creating DerivedClass (" << this << ") " << std::endl;

name = n;

age = a;

}

virtual ~DerivedClass() {

std::cout << "destroying ~DerivedClass(" << this << ") " << std::endl;

}

};

int inheritance_main(int argc, wchar_t* argv[]) {

std::cout << std::endl << __FILE__ << std::endl;

DerivedClass a("Bubba", 50);

// downcast

BaseClass* b = &a;

// upcast

DerivedClass* c = static_cast<DerivedClass*>(b);

// static cast not as pointer

// not allowed because copy constructor deleted

//BaseClass d = static_cast<BaseClass>(a);

// resolving virtual function

std::cout << b->get_details() << std::endl;

return 0;

}

cppdemo/inheritance.cpp at main · bsclifton/cppdemo · GitHub

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