table of contents
std::list::back(3) | C++ Standard Libary | std::list::back(3) |
NAME¶
std::list::back - std::list::back
Synopsis¶
reference back();
const_reference back() const;
Returns a reference to the last element in the container.
Calling back on an empty container causes undefined behavior.
Parameters¶
(none)
Return value¶
Reference to the last element.
Complexity¶
Constant.
Notes¶
For a non-empty container c, the expression c.back() is
equivalent to
*std::prev(c.end())
Example¶
The following code uses back to display the last element of a std::list<char>:
// Run this code
#include <list>
#include <iostream>
int main()
{
std::list<char> letters {'a', 'b', 'c', 'd', 'e', 'f'};
if (!letters.empty()) {
std::cout << "The last character is '" <<
letters.back() << "'.\n";
}
}
Output:¶
The last character is 'f'.
See also¶
front access the first element
(public member function)
2022.07.31 | http://cppreference.com |