In C++. Modify the following so that it uses smart pointers instead of raw pointers.

// This program illustrates the use of constructors // and destructors in the allocation and deallocation of memory. #include #include using namespace std;

class Squares { private: int length; // How long is the sequence int *sq; // Dynamically allocated array public: // Constructor allocates storage for sequence // of squares and creates the sequence Squares(int len) { length = len; sq = new int[length]; for (int k = 0; k < length; k++) { sq[k] = (k+1)*(k+1); } // Trace cout << "Construct an object of size " << length << endl; } // Print the sequence void print() { for (int k = 0; k < length; k++) cout << sq[k] << " "; cout << endl; } // Destructor deallocates storage ~Squares() { delete [ ] sq; // Trace cout << "Destroy object of size " << length << endl; } };

//*********************************************** // Outputs the sequence of squares in a * // Squares object * //*********************************************** void outputSquares(Squares *sqPtr) { cout << "The list of squares is: "; sqPtr->print();

}

int main() { // Main allocates a Squares object Squares *sqPtr = new Squares(3); outputSquares(sqPtr); // Main deallocates the Squares object delete sqPtr;

return 0; }