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extern/stdcxx/4.2.1/doc/stdlibref/strstream.html
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extern/stdcxx/4.2.1/doc/stdlibref/strstream.html
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<HTML>
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<HEAD>
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<TITLE>strstream</TITLE>
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<LINK REL=StyleSheet HREF="../rw.css" TYPE="text/css" TITLE="Apache stdcxx Stylesheet"></HEAD>
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<BODY BGCOLOR=#FFFFFF>
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<A HREF="strstream-h.html"><IMG SRC="images/bprev.gif" WIDTH=20 HEIGHT=21 ALT="Previous file" BORDER=O></A><A HREF="noframes.html"><IMG SRC="images/btop.gif" WIDTH=56 HEIGHT=21 ALT="Top of Document" BORDER=O></A><A HREF="booktoc.html"><IMG SRC="images/btoc.gif" WIDTH=56 HEIGHT=21 ALT="Contents" BORDER=O></A><A HREF="tindex.html"><IMG SRC="images/bindex.gif" WIDTH=56 HEIGHT=21 ALT="Index page" BORDER=O></A><A HREF="strstreambuf.html"><IMG SRC="images/bnext.gif" WIDTH=25 HEIGHT=21 ALT="Next file" BORDER=O></A><DIV CLASS="DOCUMENTNAME"><B>Apache C++ Standard Library Reference Guide</B></DIV>
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<H2>strstream</H2>
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<P><B>Library:</B> <A HREF="2-11.html">Input/output</A></P>
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<PRE><HR> <IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-ostream.html">basic_ostream</A></I></B>
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<B><I>strstream</I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-ios.html">basic_ios</A></I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="ios-base.html">ios_base</A></I></B>
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<IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-istream.html">basic_istream</A></I></B> <HR></PRE>
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<UL>
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<LI><A HREF="#sec1">Local Index</A></LI>
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<LI><A HREF="#sec2">Summary</A></LI>
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<LI><A HREF="#sec3">Synopsis</A></LI>
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<LI><A HREF="#sec4">Description</A></LI>
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<LI><A HREF="#sec5">Interface</A></LI>
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<LI><A HREF="#sec6">Member Types</A></LI>
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<LI><A HREF="#sec7">Constructors</A></LI>
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<LI><A HREF="#sec8">Destructors</A></LI>
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<LI><A HREF="#sec9">Member Functions</A></LI>
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<LI><A HREF="#sec10">Example</A></LI>
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<LI><A HREF="#sec11">See Also</A></LI>
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<LI><A HREF="#sec12">Standards Conformance</A></LI>
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</UL>
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<A NAME="sec1"><H3>Local Index</H3></A>
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<H4>Members</H4>
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<UL><TABLE CELLPADDING=3>
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<TR><TD VALIGN=top>
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<A HREF="#idx1194">char_type</A><BR>
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<A HREF="#idx1202">freeze()</A><BR>
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<A HREF="#idx1195">int_type</A><BR>
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</TD>
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<TD VALIGN=top><A HREF="#idx1196">off_type</A><BR>
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<A HREF="#idx1203">pcount()</A><BR>
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<A HREF="#idx1197">pos_type</A><BR>
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</TD>
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<TD VALIGN=top><A HREF="#idx1204">rdbuf()</A><BR>
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<A HREF="#idx1205">str()</A><BR>
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<A HREF="#idx1199">strstream()</A><BR>
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</TD>
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<TD VALIGN=top><A HREF="#idx1198">traits_type</A><BR>
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<A HREF="#idx1201">~strstream()</A><BR>
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</TD></TR>
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</TABLE></UL>
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<A NAME="sec2"><H3>Summary</H3></A>
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<P>Class that reads and writes to an array in memory</P>
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<A NAME="sec3"><H3>Synopsis</H3></A>
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<PRE>#include <strstream>
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namespace std {
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class strstream;
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}
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</PRE>
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<A NAME="sec4"><H3>Description</H3></A>
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<P>The class <B><I>strstream</I></B> reads and writes to an array in memory. It uses a private <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object to control the associated array. It inherits from <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> and therefore can use all the formatted and unformatted output and input functions.</P>
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<BLOCKQUOTE><HR><B>
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NOTE -- This is a deprecated feature and might not be available in future versions.
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</B><HR></BLOCKQUOTE>
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<A NAME="sec5"><H3>Interface</H3></A>
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<UL><PRE>namespace std {
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class strstream
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: public basic_iostream<char> {
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public:
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typedef char char_type;
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typedef char_traits<char_type> traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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strstream();
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strstream(char *s, int n,
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ios_base::openmode =
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ios_base::out | ios_base::in);
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void freeze(int freezefl = 1);
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int pcount() const;
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virtual ~strstream();
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strstreambuf *rdbuf() const;
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char *str();
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};
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}
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</PRE></UL>
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<A NAME="sec6"><H3>Member Types</H3></A>
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<A NAME="idx1194"></A><PRE><B>char_type</B></PRE>
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<UL>
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<P>The type <SAMP>char_type</SAMP> is a synonym of type <SAMP>char</SAMP>.</P>
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</UL>
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<A NAME="idx1195"></A><PRE><B>int_type</B></PRE>
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<UL>
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<P>The type <SAMP>int_type</SAMP> is a synonym of type<SAMP> traits_type::in_type</SAMP>.</P>
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</UL>
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<A NAME="idx1196"></A><PRE><B>off_type</B></PRE>
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<UL>
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<P>The type <SAMP>off_type</SAMP> is a synonym of type <SAMP>traits_type::off_type</SAMP>.</P>
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</UL>
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<A NAME="idx1197"></A><PRE><B>pos_type</B></PRE>
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<UL>
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<P>The type <SAMP>pos_type</SAMP> is a synonym of type <SAMP>traits_type::pos_type</SAMP>.</P>
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</UL>
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<A NAME="idx1198"></A><PRE><B>traits_type</B></PRE>
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<UL>
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<P>The type <SAMP>traits_type</SAMP> is a synonym of type <SAMP>char_traits<char></SAMP>.</P>
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</UL>
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<A NAME="sec7"><H3>Constructors</H3></A>
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<A NAME="idx1199"></A><PRE><B>strstream</B>();</PRE>
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<UL>
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<P>Constructs an object of class <B><I>strstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object. The <B><I>strstreambuf</I></B> object is initialized by calling its default constructor <SAMP>strstreambuf()</SAMP>.</P>
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</UL>
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<A NAME="idx1200"></A><PRE><B>strstream</B>(char* s, int n, ios_base::openmode
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mode = ios_base::out | ios_base::in); </PRE>
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<UL>
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<P>Constructs an object of class <B><I>strstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object. The <B><I>strstreambuf</I></B> object is initialized by calling one of two constructors:</P>
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<UL>
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<LI><P CLASS="LIST">If <SAMP>mode & app == 0</SAMP>, calls <SAMP>strstreambuf(s,n,s)</SAMP></P></LI>
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<LI><P CLASS="LIST">Otherwise calls <SAMP>strstreambuf(s,n,s + ::strlen(s))</SAMP></P></LI>
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</UL>
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</UL>
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<A NAME="sec8"><H3>Destructors</H3></A>
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<A NAME="idx1201"></A><PRE>virtual <B>~strstream</B>();</PRE>
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<UL>
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<P>Destroys an object of class <B><I>strstream</I></B>. </P>
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</UL>
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<A NAME="sec9"><H3>Member Functions</H3></A>
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<A NAME="idx1202"></A><PRE>void
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<B>freeze</B>(bool freezefl = true); </PRE>
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<UL>
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<P>Calls <SAMP>rdbuf()->freeze(freezefl)</SAMP>.</P>
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</UL>
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<A NAME="idx1203"></A><PRE>int
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<B>pcount</B>() const; </PRE>
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<UL>
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<P>Returns <SAMP>rdbuf()->pcount()</SAMP>.</P>
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</UL>
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<A NAME="idx1204"></A><PRE>strstreambuf*
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<B>rdbuf</B>() const; </PRE>
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<UL>
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<P>Returns a pointer to the <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object associated with the stream.</P>
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</UL>
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<A NAME="idx1205"></A><PRE>char*
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<B>str</B>();</PRE>
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<UL>
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<P>Returns <SAMP>rdbuf()->str()</SAMP>.</P>
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</UL>
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<A NAME="sec10"><H3>Example</H3></A>
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<UL><PRE>//
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// strstream.cpp
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//
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#include <iostream> // for cout, endl
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#include <strstream> // for sstream
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int main ()
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{
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// create a bi-directional strstream object
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std::strstream inout;
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// write out three lines to the stream
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inout << "Dieses ist die Geschichte eines Mannes.\n"
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<< "C'est l'histoire d'un homme.\n"
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<< "This is the story of a man." << std::endl;
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char line [80];
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// extract the first line
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inout.getline (line, sizeof line);
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// output the first line to stdout
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std::cout << "\nDeutsch:\n" << line;
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// extract the second line
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inout.getline (line, sizeof line);
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// output the second line to stdout
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std::cout << "\nFrançais:\n" << line;
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// extract the third line
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inout.getline (line, sizeof line);
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// output the third line to stdout
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std::cout << "\nEnglish:\n" << line << std::endl;
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// output the contents of the stream object to stdout
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std::cout << std::endl << inout.str () << std::endl;
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return 0;
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}
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Program Output:
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</PRE></UL>
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<UL><PRE>
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Deutsch:
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Dieses ist die Geschichte eines Mannes.
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Francais:
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C'est l'histoire d'un homme.
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English:
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This is the story of a man.
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Dieses ist die Geschichte eines Mannes.
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C'est l'histoire d'un homme.
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This is the story of a man.
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</PRE></UL>
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<A NAME="sec11"><H3>See Also</H3></A>
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<P><B><I><A HREF="char-traits.html">char_traits</A></I></B>, <B><I><A HREF="ios-base.html">ios_base</A></I></B>, <B><I><A HREF="basic-ios.html">basic_ios</A></I></B>, <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B>, <B><I><A HREF="istrstream.html">istrstream</A></I></B>, <B><I><A HREF="ostrstream.html">ostrstream</A></I></B></P>
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<A NAME="sec12"><H3>Standards Conformance</H3></A>
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<P><I>Deprecated. See ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, </I>Annex D Compatibility features Section D.7.4</P>
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<BR>
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<HR>
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