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

Returns a reference to the last element in the container.

# Declarations

reference back();

(since C++11) (constexpr since C++17)

const_reference back() const;

(since C++11) (constexpr since C++14)

# Return value

Reference to the last element.

# Notes

For a non-empty container c, the expression c.back() is equivalent to *std::prev(c.end()).

# Example

#include <cassert>
#include <array>
 
int main()
{
    std::array<char, 4> letters{'a', 'b', 'c', 'd'};
    assert(letters.back() == 'd');
}

# See also