Two pointers of various information are stored

Question

Is it true that:

int* p = new int;

and

int* p1 = new int[5]();

in case of p1 will additional information be saved?

Answer 1

Yes, may be.

I recommend you read the following elements from C ++ - faq:

• How does the compiler know that there are n objects that will be destroyed with delete []?
• How do compilers use "over-allocation" to remember the number of elements in a selected array?

Corresponding quote extracted from the first link:

The runtime system stores the number of objects, n, where it is possible to obtain, if you only know the pointer, s. There are two popular methods that do this. [...]

• n Fred.
• p n

Answer 2

++ - FAQ .