C++ examples for Class:Inheritance
Behavior of inherited functions in a derived class
#include <iostream> class Pool/*ww w. j a v a 2 s . c o m*/ { protected: double length {1.0}; double width {1.0}; double height {1.0}; public: Pool(double lv, double wv, double hv) : length {lv}, width {wv}, height {hv} {} // Function to show the volume of an object void showVolume() const { std::cout << "Pool usable volume is " << volume() << std::endl; } // Function to calculate the volume of a Pool object double volume() const { return length*width*height; } }; class ToughPack : public Pool { public: // Constructor ToughPack(double lv, double wv, double hv) : Pool {lv, wv, hv} {} // Function to calculate volume of a ToughPack allowing 15% for packing double volume() const { return 0.85*length*width*height; } }; int main() { Pool pool {20.0, 30.0, 40.0}; // Define a pool ToughPack hardcase {20.0, 30.0, 40.0}; // Declare tough pool - same size pool.showVolume(); // Display volume of base pool hardcase.showVolume(); // Display volume of derived pool //std::cout << "hardcase volume is " << hardcase.volume() << std::endl; //Pool *pPool {&hardcase}; //std::cout << "hardcase volume through pPool is " << pPool->volume() << std::endl; }