Chapter 15.3, Problem 15.4CP

What will the following program display?

#include <iostream>

#include <memory>

using namespace std;

class First

{

protected:

int a:

public:

First (int x = 1) { a = x; }

void twist() { a *= 2; }

int getVal() { twist(); return a; }

};

class Second : public First

{

private:

int b;

public:

Second(int y = 5) { b = y; }

void twist() { b *= 10; }

};

int main()

{

shared_ptr<First> objectl = make_shared<First>();

shared_ptr<Second> object2 = make_shared<Second>();

cout << objectl->getVal() << endl;

cout << object2->getVal() << endl;

return 0;

}