C++: Unique Pointer vs Raw Pointer

What is the difference between a unique pointer and a raw pointer in C++?

A unique pointer is a smart pointer that owns a dynamically allocated object and ensures that there is only one unique pointer to that object. A raw pointer, on the other hand, is a simple pointer that does not manage the memory it points to, which can lead to memory leaks if not handled properly.

When should I use a unique pointer instead of a raw pointer?

You should use a unique pointer when you want to ensure exclusive ownership of a resource and automatically manage its lifetime. This helps prevent memory leaks and dangling pointers.

Can you give me an example of how to use a unique pointer?

Sure! Here's a simple example:

#include <memory>

int main() {
    std::unique_ptr<int> ptr = std::make_unique<int>(10);
    // ptr now owns the integer with value 10
    return 0;
}

What are the advantages of using unique pointers?

The advantages of using unique pointers include automatic memory management, prevention of memory leaks, and safer code since they cannot be copied, only moved.