Array as parameter

Question

I was wondering which one of these is the best when I pass an array as parameter?

void function(int arr[]) {...};

or

void function(int* arr) {...};

Could you tell me your reason? and which book you might refer to? Thanks!

Answer 1

Since this question is tagged c++, I would use neither. If you must use this, both are equivalent.

But since you use C++, a better approach is to use a std::vector for such tasks

void function(std::vector<int> &arr) {...}

or, if you don't modify the array/vector

void function(const std::vector<int> &arr) {...}

Answer 2

If you just want to pass any array (including dynamically allocated), they are equivalent.

Should your function require an actual fixed-size array, you could do this:

template <size_t N>
void function(char (&str)[N]) { ... }