How can I use pointers safely in C++?

How can I use pointers safely in C++?

Using pointers safely in C++ involves practices like initializing pointers, avoiding dangling pointers, and using smart pointers.

What are dangling pointers and how can I avoid them?

Dangling pointers occur when a pointer points to a memory location that has been freed. To avoid them, always set pointers to nullptr after deleting.

What are smart pointers and when should I use them?

Smart pointers, like std::unique_ptr and std::shared_ptr, manage memory automatically. Use them to prevent memory leaks and simplify ownership.

Can you give an example of using a smart pointer?

Sure! Here's a simple example:

#include <memory>

int main() {
    std::unique_ptr<int> ptr = std::make_unique<int>(10);
    // ptr automatically deletes the memory when it goes out of scope
}