std::basic_ostream::tellp
From cppreference.com
< cpp | io | basic ostream
| pos_type tellp();
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Returns the output position indicator of the current associated streambuf object.
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Behaves as |
(since C++11) |
If fail()==true, returns pos_type(-1). Otherwise, returns rdbuf()->pubseekoff(0, std::ios_base::cur, std::ios_base::out).
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[edit] Parameters
(none)
[edit] Return value
current output position indicator on success, pos_type(-1) if a failure occurs.
[edit] Example
Run this code
#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
[edit] See also
| sets the output position indicator (public member function) |
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| returns the input position indicator (public member function of std::basic_istream)
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| sets the input position indicator (public member function of std::basic_istream)
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