pos_type tellp(); |
Returns the output position indicator of the current associated streambuf
object.
Behaves as UnformattedOutputFunction (except without actually performing output). After constructing and checking the sentry object, | (since C++11) |
If fail()==true
, returns pos_type(-1)
. Otherwise, returns rdbuf()->pubseekoff(0, std::ios_base::cur, std::ios_base::out)
.
(none).
current output position indicator on success, pos_type(-1)
if a failure occurs.
#include <iostream> #include <sstream> int main() { std::ostringstream s; std::cout << s.tellp() << '\n'; s << 'h'; std::cout << s.tellp() << '\n'; s << "ello, world "; std::cout << s.tellp() << '\n'; s << 3.14 << '\n'; std::cout << s.tellp() << '\n' << s.str(); }
Output:
0 1 13 18 hello, world 3.14
sets the output position indicator (public member function) |
|
returns the input position indicator (public member function of std::basic_istream<CharT,Traits> ) |
|
sets the input position indicator (public member function of std::basic_istream<CharT,Traits> ) |
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