NAME

std::basic_ostream::tellp - std::basic_ostream::tellp

Synopsis

pos_type tellp();

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

Behaves as UnformattedOutputFunction (except without actually (since C++11)
performing output). After constructing and checking the sentry 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

// 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: