Question

Possible Duplicate:
How do you realloc in C++?

I know that C++ arrays can be reallocated (expanded) using realloc() if memory has been allocated via malloc() or calloc(). My question is, how can I expand an array in C++ whose memory has been allocated via the new operator?

Answer 1

You can’t – that’s why in C++ you use std::vector<>.

If you wanted to do this, you’d have to allocate a new array (via new), then copy the old items across (std::copy for example), then delete[] the previous array.

Just use std::vector – let it do all that stuff for you…