std::basic_string::back

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< cpp‎ | string‎ | 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.

Contents

[edit] Parameters

(none)

[edit] Return value

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

[edit] Complexity

Constant

[edit] Notes

back requires that !empty() == true, otherwise the result is undefined.

[edit] 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

[edit] See also

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