std::basic_ostream::tellp

pos_type tellp();

Returns the output position indicator of the current associated streambuf object.

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();
}

0
1
13
18
hello, world 3.14

See also