How do I use smart pointers in C++17?

How do I use smart pointers in C++17?

In C++17, you can use smart pointers like std::unique_ptr and std::shared_ptr to manage dynamic memory. Would you like an example?

Yes, please provide an example of std::unique_ptr.

Sure! Here's a simple example:

#include <iostream>
#include <memory>

int main() {
    std::unique_ptr<int> ptr = std::make_unique<int>(10);
    std::cout << *ptr << std::endl; // Outputs: 10
    return 0;
}

This creates a unique pointer that manages an integer.

What about std::shared_ptr?

std::shared_ptr allows multiple pointers to share ownership of an object. Here's an example:

#include <iostream>
#include <memory>

int main() {
    std::shared_ptr<int> ptr1 = std::make_shared<int>(20);
    std::shared_ptr<int> ptr2 = ptr1;
    std::cout << *ptr1 << ' ' << *ptr2 << std::endl; // Outputs: 20 20
    return 0;
}

Both ptr1 and ptr2 share ownership of the integer.