Howt to get lenght of an array?

Roofit and RooStats
1

Hi experts

I am having an array defined as follows:
Int_t number[10];

Are there inbuilt function of getting properties of number[10] like length and sum all the entries, thanks

2

Hi,

int arr[10];
std::cout <<  sizeof(arr)/sizeof(int) << std::endl;

but really my advice would be to use classes like vector or array:

std::vector<int> v {1,2,3}
v.size()
std::array<int,3> a {1,2,3}
a.size()

D