#include <iostream> using namespace std; class Base { private: int x; int y; public: Base(int x, int y) { this->x = x; this->y = y; } int getX() { return x; } int getY() { return y; } void calculate() { cout << getX() * getY() << endl; } }; class Sub : public Base { // write your code here...... public: Sub(int x, int y) : Base(x,y) { } void calculate() { if (getY() == 0) cout << "Error" << endl; else cout << getX() / getY() << endl; } }; int main() { int x, y, z; cin >> x; cin >> y; Sub sub(x, y); sub.calculate(); return 0; }