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 *
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 <iostream>
#include <string>
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;
}
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