What is the difference between delete and delete[]?

Question

What is the difference between delete and delete[] operators in C++?

Answer 1

The delete operator deallocates memory and calls the destructor for a single object created with new.

The delete [] operator deallocates memory and calls destructors for an array of objects created with new [].

Using delete on a pointer returned by new [] or delete [] on a pointer returned by new results in undefined behavior.