object
<iostream>
std::wclog
extern basic_ostream<wchar_t> wclog;
Standard output stream for logging (wide)
Object of class wostream that represents the standard logging stream oriented to wide characters (of type wchar_t). It corresponds, along with wcerr, to the C stream stderr.
The standard logging stream is a destination of characters determined by the environment. This destination may be shared by more than one standard object (such as wcout or wcerr).
As an object of a basic_ostream class, characters can be written to it either as formatted data using the insertion operator (operator<<) or as unformatted data, using member functions such as write.
The object is declared in header <iostream> with external linkage and static duration: it lasts the entire duration of the program.
In terms of
static initialization order,
wclog is guaranteed to be properly constructed and initialized no later than the first time an object of type
ios_base::Init is constructed.
In terms of
static initialization order,
wclog is guaranteed to be properly constructed and initialized no later than the first time an object of type
ios_base::Init is constructed, with the inclusion of
<iostream> counting as at least one initialization of such objects with
static duration.
wclog is not tied to any other stream (see basic_ios::tie).
By default, clog is synchronized with stderr (see ios_base::sync_with_stdio).
A program should not mix output operations on wclog with output operations on clog or cerr (or with other narrow-oriented output operations on stderr): Once an output operation has been performed on either, the standard logging stream acquires an orientation (either narrow or wide) that can only be safely changed by calling freopen on stderr.
For more information on the operations supported by wclog, see the reference for its type: basic_ostream.
See also
- ostream
- Output Stream (class
)
- clog
- Standard output stream for logging (object
)
- wcout
- Standard output stream (wide) (object
)
- wcerr
- Standard output stream for errors (wide-oriented) (object
)
- wcin
- Standard input stream (wide) (object
)