Equiv of Realloc in C++?

[CuriousJay]

As I'm sitting here going through some old posts on the differences between the new/delete vs. malloc/free approaches to allocating memory I came up with a question.

What is the new/delete approach to realloc? How is this accomplished?

Let's say I create an int array ...

int *x = new int [5];

/*And later in my program I *may* need to reallocate 
that int to 10 elements.  How can this be done with the 
new/delete approach?*/

[Sorensen]

There's no direct equivalent. You'll either have to allocate a new array of the extended size, copy the old contents across and then delete the old array, or use std::vector.