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    1. header

      <iostream>

      Standard Input / Output Streams Library
      Header that defines the standard input/output stream objects:

      Including this header may automatically include other headers, such as <ios>, <streambuf>, <istream>, <ostream> and/or <iosfwd>.
      Including <iostream> automatically includes also <ios>, <streambuf>, <istream>, <ostream> and <iosfwd>.

      Note that the iostream class is mainly declared in header <istream>.

      Objects


      Narrow characters (char)


      Wide characters (wchar_t)

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