How do I use the delete operator in C++?

What is the purpose of the delete operator in C++?

The delete operator in C++ is used to deallocate memory that was previously allocated with new, preventing memory leaks.

Can you show me an example of how to use delete?

Sure! Here's a simple example:

int* ptr = new int; // allocate memory
*ptr = 10; // assign value
delete ptr; // deallocate memory

What happens if I forget to use delete?

If you forget to use delete, the memory allocated will not be released, leading to memory leaks which can exhaust system memory over time.

Are there any alternatives to using delete?

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