std::vector<T,Allocator>::end, std::vector<T,Allocator>::cend
From cppreference.com
iterator end(); |
(until C++11) | |
iterator end() noexcept; |
(since C++11) (until C++20) |
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constexpr iterator end() noexcept; |
(since C++20) | |
const_iterator end() const; |
(until C++11) | |
const_iterator end() const noexcept; |
(since C++11) (until C++20) |
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constexpr const_iterator end() const noexcept; |
(since C++20) | |
const_iterator cend() const noexcept; |
(since C++11) (until C++20) |
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constexpr const_iterator cend() const noexcept; |
(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.
Parameters
(none)
Return value
Iterator to the element following the last element.
Complexity
Constant.
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
(C++11) |
returns an iterator to the beginning (public member function) |