Initialize elements to zero

Hello, is there a way to initialize elements to 0 on dynamic allocation?

int *a = new int(0);
doesn't work..I'm not exactly sure what that does..initialize what to 0?
It looks like a member initializer to me..
this is what I tried..

Code:

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    int *a = new int(0);
    a = new int[30] ;

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but didn't work..It is C++ I am sure there is something, I don't want to end up using calloc

and I don't want to use a loop. :O

new int(0) allocates one int and initializes it to 0.
Why don't you use std::vector? It will initialize all elements to 0.
Or you could use push_back to push elements into the vector as needed.
There is also std::fill.

heck yeah..would use that...why not..
ty E.

Just for the record, new[] allows zero-initialization like this:

Code:

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int* a = new int[30]();

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omg! I was so close!!
i tried that earlier except I put new int[30](0) :(
ah well...noted anon :D

You are better served just learning to use `std::fill' as a matter of course because you only ever get default constructed values and not every compiler does this for native types.

*grumble*

Why didn't the committee just standardize constructing arrays in the first place?

Soma