The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis
#include <istream>
#include <limits>
template <typename charT, typename traits>
inline
std::basic_istream<charT,traits>&
ignoreLine (std::basic_istream<charT,traits>& strm)
{
// skip until end-of-line
strm.ignore(std::numeric_limits<std::streamsize>::max(),
strm.widen('\n'));
// return stream for concatenation
return strm;
}