std::array max_size() method

since C++11

constexpr size_type max_size() const noexcept;

Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end()) for the largest container.

Parameters

(none)

Return value

Maximum number of elements the container can hold.

Complexity

Constant.

Notes

important

Because each std::array<T, N> is a fixed-size container, the value returned by max_size equals N (which is also the value returned by size).

Example

Main.cpp

#include <iostream>
#include <locale>
#include <array>
 
int main()
{
    std::array<char, 10> q;
    std::cout.imbue(std::locale("en_US.UTF-8"));    
    std::cout << "Maximum size of the std::array is " << q.max_size() << '\n';
}

Possible output

Maximum size of the std::array is 10