Using C++, is there an equivalent standard library constant for '\t' like there is for a newline?
Ideally:
std::stringstream ss; ss << std::tab << "text"; If not, why is this the case?
(I'm aware I can just insert a '\t' but I'd like to sate my curiosity).
4 Answers
No. std::endl isn't a newline constant. It's a manipulator which, in addition to inserting a newline, also flushes the stream.
If you just want to add a newline, you're supposed to just insert a '\n'. And if you just want to add a tab, you just insert a '\t'. There's no std::tab or anything because inserting a tab plus flushing the stream is not exactly a common operation.
If you want to add the feature yourself, it would look like this:
#include <iostream> namespace std { template <typename _CharT, typename _Traits> inline basic_ostream<_CharT, _Traits> & tab(basic_ostream<_CharT, _Traits> &__os) { return __os.put(__os.widen('\t')); } } int main() { std::cout << "hello" << std::endl; std::cout << std::tab << "world" << std::endl; } I don't recommend doing this, but I wanted to add a solution for completeness.
Actually, it is not needed.
Because endl first does the same job of inserting a newline as \n, and then also flushes the buffer.
Inserting \t on a stream does not require to flush it after .
No.
There are only std::ends (insert null character) and std::flush (flush the stream) output manipulators besides std::endl in ostream include file.
You can find others in ios and iomanip include files. Full list is here
