std::basic_string::back

From cppreference.com
< cpplrm; | stringlrm; | basic string
std::basic_string
CharT& back();
(since C++11)
const CharT& back() const;
(since C++11)

Returns reference to the last character in the string. The behavior is undefined if empty() == true.

Parameters

(none)

Return value

reference to the last character, equivalent to operator[](size() - 1).

Complexity

Constant

Example

#include <iostream>
#include <string>

int main()
{
  {
    std::string s("Exemplary");
    char& back = s.back();
    back = 's';
    std::cout << s << '\n'; // "Exemplars"
  }

  {
    std::string const c("Exemplary");
    char const& back = c.back();
    std::cout << back << '\n'; // 'y'
  }
}

Output:

Exemplars
y

See also

(C++11)
accesses the first character
(public member function)