start the iterator at line ll's character position pp

for numbers: a value

for numbers: a value

for numbers: a value

for numbers: a value

for numbers: a value

for numbers: a value

The constructor just sets full to indicate that the buffer is empty:

Constructor

discard characters up to and including a c

microsoft doesn't yet support C++11 inheriting constructors

modifying operations

requires Random_access_iterator<Ran>()