How do I use new and delete in C++?

How do I use new and delete in C++?

In C++, new is used to allocate memory dynamically, while delete is used to free that memory. Would you like an example?

Yes, please provide an example.

Sure! Here's a simple example:

int* ptr = new int; // allocate memory for an integer
*ptr = 5; // assign value

// use the value
std::cout << *ptr << std::endl;

delete ptr; // free the allocated memory

What happens if I forget to use delete?

If you forget to use delete, it will lead to a memory leak, as the allocated memory will not be freed.

Are there any alternatives to using new and delete?

Yes, you can use smart pointers like std::unique_ptr and std::shared_ptr which automatically manage memory.