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cin(3C++)			       -			     cin(3C++)

Standard C++ Library Copyright 1998, Rogue Wave Software, Inc.

NAME
       cin

	- Controls input from a stream buffer associated with the object stdin
       declared in <cstdio>.

SYNOPSIS
       #include <iostream>
       extern istream cin;
       istream cin;

DESCRIPTION
       The object cin controls input from a stream buffer associated with  the
       object  stdin  declared in <cstdio>. By default, the standard C and C++
       streams are synchronized, but you can improve performance by using  the
       ios_base member function synch_with_stdio to desynchronize them.

       After  the  object  cin	is initialized, cin.tie() returns &cout, which
       implies that cin and cout are synchronized.

EXAMPLE
       //
       // cin example #1
       //
       #include <iostream>

       void main ( )
       {
 using namespace std;

 int i;
 float f;
 char c;

  //read an integer, a float and a character from stdin
 cin >> i >> f >> c;

  // output i, f and c to stdout
 cout << i << endl << f << endl << c << endl;
}

//
// cin example #2
//
#include <iostream>

void main ( )
{
 using namespace std;

 char p[50];

  // remove all the white spaces
 cin >> ws;

  // read characters from stdin until a newline
  // or 49 characters have been read
 cin.getline(p,50);

  // output the result to stdout
 cout << p;
}

When inputting "  Grendel the monster" (newline) in  the  previous  test,  the
output is "Grendel the monster". The manipulator ws removes spaces.

SEE ALSO
       basic_istream(3C++),	basic_iostream(3C++),	  basic_filebuf(3C++),
       cout(3C++),   cerr(3C++),    clog(3C++),	   wcin(3C++),	  wcout(3C++),
       wcerr(3C++), wclog(3C++), ios_base(3C++), basic_ios(3C++)

       Working Paper for Draft Proposed International Standard for Information
       Systems--Programming Language C++, Section 27.3.1

STANDARDS CONFORMANCE
       ANSI X3J16/ISO WG21 Joint C++ Committee

Rogue Wave Software		  02 Apr 1998			     cin(3C++)
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