freeing array in c++

To free an array in C++, you need to use the delete[] operator. This operator is specifically designed to deallocate memory that was allocated using the new[] operator.

Here are the steps to free an array in C++:

  1. Allocate memory for the array using the new[] operator. For example, you can allocate an array of integers like this:

cpp int* array = new int[10];

  1. Perform any operations on the array that you need to.

  2. When you are finished using the array, free the memory by using the delete[] operator. This will release the memory back to the system.

cpp delete[] array;

It's important to note that you should always use delete[] to free memory that was allocated with new[]. Using delete instead of delete[] can lead to undefined behavior.

  1. After freeing the memory, you should not access the array anymore, as it is no longer valid. If you need to use the array again, you will need to allocate new memory for it using new[].

It's important to properly manage memory in C++ to avoid memory leaks and undefined behavior. By using the new[] and delete[] operators correctly, you can allocate and free memory for arrays in a safe and efficient manner.