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std::strstream::pcount(3) C++ Standard Libary std::strstream::pcount(3)

NAME

std::strstream::pcount - std::strstream::pcount

Synopsis


int pcount() const; (deprecated in C++98)
(removed in C++26)


Returns the number of characters that were output in the put area of the associated
std::strstreambuf. Effectively calls rdbuf()->pcount().

Parameters


(none)

Return value


The number of characters in the put area, or zero if nothing was output.

Example

// Run this code


#include <iostream>
#include <strstream>


int main()
{
std::strstream dyn; // dynamically-allocated output buffer
dyn << "Test: " << 1.23 << std::ends;
std::cout << "The size of the output is " << dyn.pcount()
<< " and it holds \"" << dyn.str() << "\"\n";
dyn.freeze(false);


char buf[10];
std::strstream user(buf, 10); // user-provided output buffer
user << 1.23; // note: no std::ends
std::cout.write(buf, user.pcount());
std::cout << '\n';
}

Output:


The size of the output is 11 and it holds "Test: 1.23"
1.23

See also


returns the next pointer minus the beginning pointer in the output sequence:
pcount the number of characters written
(public member function of std::strstreambuf)

2024.06.10 http://cppreference.com