std::array<T,N>::size
From cppreference.com
C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Containers library
(C++17)
(C++11)
(C++26)
(C++26)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++23)
(C++23)
(C++23)
(C++23)
(C++20)
(C++23)
Tables
std::array
constexpr size_type size() const noexcept;
(since C++11)
Returns the number of elements in the container.
Contents
[edit] Return value
std::distance (begin(), end())
[edit] Complexity
Constant.
[edit] Example
The following code uses size to display the number of elements in a std::array :
Run this code
#include <array> #include <iostream> int main() { std::array <int, 4> nums{1, 3, 5, 7}; std::cout << "nums contains " << nums.size() << " elements.\n"; }
Output:
nums contains 4 elements.