std::basic_ostream<CharT,Traits>:: tellp
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pos_type tellp
(
)
;
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||
Returns the output position indicator of the current associated
streambuf
object.
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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 ) .
Parameters
(none)
Return value
current output position indicator on success, pos_type ( - 1 ) if a failure occurs.
Example
#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
See also
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sets the output position indicator
(public member function) |
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returns the input position indicator
(public member function of
std::basic_istream<CharT,Traits>
)
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sets the input position indicator
(public member function of
std::basic_istream<CharT,Traits>
)
|