getline

template<class E, class T, class A>
    basic_istream<E, T>& getline(
        basic_istream <E, T>& is,
        basic_string<E, T, A>& str);
template<class E, class T, class A>
    basic_istream<E, T>& getline(
        basic_istream <E, T>& is,
        basic_string<E, T, A>& str,
        E delim);

The first template function returns getline(is, str, is.widen('\n')).

The second template function replaces the sequence controlled by str with a sequence of elements extracted from the stream is. In order of testing, extraction stops:

1. At end of file.
2. After the function extracts an element that compares equal to delim, in which case the element is neither put back nor appended to the controlled sequence.
3. After the function extracts is.max_size() elements, in which case the function calls setstate(ios_base::failbit).

If the function extracts no elements, it calls setstate(failbit). In any case, it returns *this.

See the related sample program.