No members available of 'array' class in C++

Question

I'm probably facing the stupidest error so far. I was studying for my programming final exam in Visual Studio 2022 and my arrays suddenly stopped working. I define the array like this,

int arr[10] = {};

But when I try to use array functions for my array,

arr.

After putting '.', IntelliSense says "No members available" and no array functions listed.

Is this a bug or am I just missing something here?

Thanks a lot.

What exactly are you trying to do? C-style arrays do not have member functions — UnholySheep, Jul 10 '23 at 11:44
well in c++ there are no methods for a simple array. look into the vector class — GreenChicken, Jul 10 '23 at 11:46
@UnholySheep I want to use size() function. I also can't define the array using array approach. It throws this error, array counts = {}; ->counts is not a template ->argument list for class template "std::array" is missing — unitydevsz, Jul 10 '23 at 11:47
the template parameters go on the type, not the variable name: `std::array counts = {}` — Alan Birtles, Jul 10 '23 at 11:48
c-arrays have no members. For once Intellisense is right to the point. Use `std::array` or the non-member `std::size` — 463035818_is_not_an_ai, Jul 10 '23 at 11:48
don't guess how it works. https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list — 463035818_is_not_an_ai, Jul 10 '23 at 11:49

Yaksh Bariya · Accepted Answer · 2023-07-10T11:57:29.990

What you have initialised is C-style array (as @UnholySheep has already pointed out).

// C-style arrays

// This allocates a C-style array of 10 elements of type int
int myArray[10];

// C++ style arrays

// Include the array implementation provided by libc++
#include <array>

// This allocates C++ style array
std::array<int, 10> myArray;

With C++ style arrays you'll get member functions like end(), begin(), etc, but not with C-style arrays.

Also if you are new to the language, I would suggest you to look at cppreference for the documentation for the language features, it's quite accurate. https://en.cppreference.com/w/cpp/container/array is the link for documentation for std::array

No members available of 'array' class in C++

1 Answers1