std::array<T,N>::max_size

 

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std::array

Member types
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Element access array::at array::operator[]    array::front array::back array::data Operations array::fill array::swap	Iterators array::beginarray::cbegin array::endarray::cend array::rbeginarray::crbegin    array::rendarray::crend	Capacity array::empty array::size array::max_size
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operator==operator<=> (C++20) get(std::array) swap(std::array) to_array (C++20)	operator|=operator<operator>operator<=operator>= (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)
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constexpr size_type max_size() const noexcept;		(since C++11)

Returns the maximum number of elements the container is able to hold.

Parameters

(none)

Return value

Maximum number of elements, i.e. N.

Complexity

Constant.

Notes

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

Run this code

#include <iostream>
#include <locale>
#include <array>
 
int main()
{
    std::array<char, 10> p;
    std::array<long, 10> q;
 
    std::cout.imbue(std::locale("en_US.UTF-8"));
    std::cout << std::uppercase
              << "p.max_size() = " << std::dec << p.max_size() << " = 0x"
              << std::hex << p.max_size() << '\n'
              << "q.max_size() = " << std::dec << q.max_size() << " = 0x"
              << std::hex << q.max_size() << '\n';
}

Output:

p.max_size() = 10 = 0xA
q.max_size() = 10 = 0xA

See also

size	returns the number of elements (public member function)