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std::vector::end,std::vector::cend(3) | C++ Standard Libary | std::vector::end,std::vector::cend(3) |
NAME¶
std::vector::end,std::vector::cend - std::vector::end,std::vector::cend
Synopsis¶
iterator end(); (until C++11)
(since C++11)
iterator end() noexcept; (constexpr since
C++20)
const_iterator end() const; (until C++11)
const_iterator end() const (1) (since C++11)
noexcept; (constexpr since
(2) C++20)
const_iterator cend() const (since C++11)
noexcept; (3) (constexpr since
C++20)
Returns an iterator to the element following the last element of the
vector.
This element acts as a placeholder; attempting to access it results in
undefined
behavior.
range-begin-end.svg
Parameters¶
(none)
Return value¶
Iterator to the element following the last element.
Complexity¶
Constant.
Notes¶
libc++ backports cend() to C++98 mode.
Example¶
// Run this code
#include <algorithm>
#include <iostream>
#include <numeric>
#include <string>
#include <vector>
int main()
{
std::vector<int> nums{1, 2, 4, 8, 16};
std::vector<std::string> fruits{"orange", "apple",
"raspberry"};
std::vector<char> empty;
// Print vector.
std::for_each(nums.begin(), nums.end(), [](const int n) { std::cout <<
n << ' '; });
std::cout << '\n';
// Sums all integers in the vector nums (if any), printing only the result.
std::cout << "Sum of nums: "
<< std::accumulate(nums.begin(), nums.end(), 0) << '\n';
// Prints the first fruit in the vector fruits, checking if there is any.
if (!fruits.empty())
std::cout << "First fruit: " << *fruits.begin()
<< '\n';
if (empty.begin() == empty.end())
std::cout << "vector 'empty' is indeed empty.\n";
}
Output:¶
1 2 4 8 16
Sum of nums: 31
First fruit: orange
vector 'empty' is indeed empty.
See also¶
begin returns an iterator to the beginning
cbegin (public member function)
(C++11)
end
cend returns an iterator to the end of a container or array
(C++11) (function template)
(C++14)
2024.06.10 | http://cppreference.com |