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Description
It is used in standard Input / Output Streams Library.
Declaration
Following is the declaration for iosstream function.
C++98
Including this header may automatically include other headers, such as <ios>, <streambuf>, <istream>, <ostream> and/or <iosfwd>.
C++11
Including <iostream> automatically includes also <ios>, <streambuf>, <istream>, <ostream> and <iosfwd>.
Objects
The objects of iosstream should be like this −
Narrow characters (char)
| Sr.No. | Characters | Definition |
|---|---|---|
| 1 | cin | Standard input stream |
| 2 | cout | Standard output stream |
| 3 | cerr | Standard output stream for errors |
| 4 | clog | Standard output stream for logging |
Wide characters (wchar_t)
| Sr.No. | Characters | Definition |
|---|---|---|
| 1 | wcin | Standard input stream (wide) |
| 2 | wcout | SStandard output stream (wide) |
| 3 | wcerr | Standard output stream for errors (wide-oriented) |
| 4 | wclog | Standard output stream for logging (wide) |
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