int add (int x, int y) { return x + y; } int s = 0; return accumulate (l.begin(), l.end(), s, add);Implementierung (in
<numeric>
)
template<typename _InputIterator, typename _Tp, typename _BinaryOperation> _Tp accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op) { for ( ; __first != __last; ++__first) __init = __binary_op(__init, *__first); return __init; }