| I/O manipulators | ||||
| Print functions(C++23) | ||||
| C-style I/O | ||||
| Buffers | ||||
(C++23) | ||||
(C++98/26*) | ||||
(C++20) | ||||
| Streams | ||||
| Abstractions | ||||
| File I/O | ||||
| String I/O | ||||
| Array I/O | ||||
(C++23) | ||||
(C++23) | ||||
(C++23) | ||||
(C++98/26*) | ||||
(C++98/26*) | ||||
(C++98/26*) | ||||
| Synchronized Output | ||||
(C++20) | ||||
| Types | ||||
| Error category interface | ||||
(C++11) | ||||
(C++11) |
| Member functions | ||||
ostrstream::pcount |
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 associatedstd::strstreambuf. Effectively callsrdbuf()->pcount().
Contents |
(none)
The number of characters in the put area, or zero if nothing was output.
#include <iostream>#include <strstream> int main(){std::ostrstream 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::ostrstream user(buf,10);// user-provided output buffer user<<1.23;// note: no std::endsstd::cout.write(buf, user.pcount());std::cout<<'\n';}
Output:
The size of the output is 11 and it holds "Test: 1.23"1.23
| returns the next pointer minus the beginning pointer in the output sequence: the number of characters written (public member function of std::strstreambuf)[edit] |
