How to clear width when outputting from a stream, after using std::setw?
c++, iomanip, setw, stringstream
Solution
Remember that the input operator `>>` stops reading at whitespace.
Use e.g. `std::getline` to get the remainder of the string:
std::stringstream ss("123ABCDEF1And then the rest of the string");
ss >> std::setw(3) >> nId
>> std::setw(6) >> sLabel
>> std::setw(1) >> bFlag;
std::getline(ss, sLeftovers);
Problem
I'm using a std::stringstream to parse a fixed format string into values. However the last value to be parsed is not fixed length. To parse such a string I might do: ``` std::stringstream ss("123ABCDEF1And then the rest of the string"); ss >> std::setw(3) >> nId >> std::setw(6) >> sLabel >> std::setw(1) >> bFlag >> sLeftovers; ``` But how do I set the width such that the remainder of the string is output? Through trial and error I found that doing this works: ``` >> std::setw(-1) >> sLeftovers; ``` But what's the correct approach?