| 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 | ||||
| State functions | ||||
| Formatting | ||||
| Miscellaneous | ||||
| Protected member functions | ||||
basic_ios::init | ||||
(C++11) | ||||
(C++11) | ||||
(C++11) |
protected: void init(std::basic_streambuf<CharT,Traits>* sb); | ||
Sets the associated stream buffer tosb and initializes the internal state.
The postconditions are as follows:
| Element | Value |
|---|---|
| rdbuf() | sb |
| tie() | null pointer |
| rdstate() | goodbit ifsb is not a null pointer, otherwisebadbit |
| exceptions() | goodbit |
| flags() | skipws| dec |
| width() | 0 |
| precision() | 6 |
| fill() | widen(' ') |
| getloc() | a copy of the value returned bystd::locale() |
This member function is protected: it is called by the constructors of the derived stream classesstd::basic_istream andstd::basic_ostream once the associated stream buffer is known. Until this function is called, every member function (including the destructor) of the default-constructedstd::basic_ios invokes undefined behavior. Note thatbasic_ios is a virtual base class, and therefore its constructor is not called by the constructors of those directly derived classes, which is why two-stage initialization is necessary.
| sb | - | stream buffer to associate to |
| constructs the object (public member function)[edit] |
