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| <HTML> |
| <HEAD> |
| <TITLE>ostrstream</TITLE> |
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| <A HREF="ostreambuf-iterator.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="out-of-range.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> |
| <H2>ostrstream</H2> |
| <P><B>Library:</B> <A HREF="2-11.html">Input/output</A></P> |
| |
| <PRE><HR><B><I>ostrstream</I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-ostream.html">basic_ostream</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> <HR></PRE> |
| |
| <UL> |
| <LI><A HREF="#sec1">Local Index</A></LI> |
| <LI><A HREF="#sec2">Summary</A></LI> |
| <LI><A HREF="#sec3">Synopsis</A></LI> |
| <LI><A HREF="#sec4">Description</A></LI> |
| <LI><A HREF="#sec5">Interface</A></LI> |
| <LI><A HREF="#sec6">Member Types</A></LI> |
| <LI><A HREF="#sec7">Constructors</A></LI> |
| <LI><A HREF="#sec8">Destructors</A></LI> |
| <LI><A HREF="#sec9">Member Functions</A></LI> |
| <LI><A HREF="#sec10">Example</A></LI> |
| <LI><A HREF="#sec11">See Also</A></LI> |
| <LI><A HREF="#sec12">Standards Conformance</A></LI> |
| </UL> |
| <A NAME="sec1"><H3>Local Index</H3></A> |
| <H4>Members</H4> |
| <UL><TABLE CELLPADDING=3> |
| <TR><TD VALIGN=top> |
| <A HREF="#idx1079">char_type</A><BR> |
| <A HREF="#idx1087">freeze()</A><BR> |
| <A HREF="#idx1080">int_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1081">off_type</A><BR> |
| <A HREF="#idx1084">ostrstream()</A><BR> |
| <A HREF="#idx1088">pcount()</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1082">pos_type</A><BR> |
| <A HREF="#idx1089">rdbuf()</A><BR> |
| <A HREF="#idx1090">str()</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1083">traits_type</A><BR> |
| <A HREF="#idx1086">~ostrstream()</A><BR> |
| </TD></TR> |
| </TABLE></UL> |
| |
| <A NAME="sec2"><H3>Summary</H3></A> |
| <P>Writes to an array in memory</P> |
| <A NAME="sec3"><H3>Synopsis</H3></A> |
| |
| <PRE>#include <strstream> |
| |
| namespace std { |
| class ostrstream; |
| } |
| </PRE> |
| <A NAME="sec4"><H3>Description</H3></A> |
| <P>The class <B><I>ostrstream</I></B> 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 object. It inherits from <B><I><A HREF="basic-ostream.html">basic_ostream</A></I></B>, and therefore can use all the formatted and unformatted output functions.</P> |
| <BLOCKQUOTE><HR><B> |
| NOTE -- This is a deprecated feature and might not be available in future versions. |
| </B><HR></BLOCKQUOTE> |
| <A NAME="sec5"><H3>Interface</H3></A> |
| |
| <UL><PRE>namespace std { |
| |
| class ostrstream |
| : public basic_ostream<char> { |
| |
| public: |
| |
| typedef char char_type; |
| typedef char_traits<char_type> traits_type; |
| typedef typename traits_type::int_type int_type; |
| typedef typename traits_type::pos_type pos_type; |
| typedef typename traits_type::off_type off_type; |
| |
| ostrstream(); |
| ostrstream(char *s, int n, |
| ios_base::openmode = ios_base::out); |
| |
| virtual ~ostrstream(); |
| |
| strstreambuf *rdbuf() const; |
| void freeze(int freezefl = 1); |
| char *str(); |
| int pcount() const; |
| |
| }; |
| } |
| </PRE></UL> |
| <A NAME="sec6"><H3>Member Types</H3></A> |
| |
| <A NAME="idx1079"></A><PRE><B>char_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>char_type</SAMP> is a synonym of type <SAMP>char</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1080"></A><PRE><B>int_type</B></PRE> |
| <UL> |
| <P>The type<SAMP> int_type</SAMP> is a synonym of type <SAMP>traits_type::in_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1081"></A><PRE><B>off_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>off_type</SAMP> is a synonym of type <SAMP>traits_type::off_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1082"></A><PRE><B>pos_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>pos_type</SAMP> is a synonym of type <SAMP>traits_type::pos_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1083"></A><PRE><B>traits_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>traits_type</SAMP> is a synonym of type <SAMP>char_traits<char></SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec7"><H3>Constructors</H3></A> |
| |
| <A NAME="idx1084"></A><PRE><B>ostrstream</B>();</PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>ostrstream</I></B>, initializing the base class <B><I><A HREF="basic-ostream.html">basic_ostream</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> |
| </UL> |
| |
| |
| <A NAME="idx1085"></A><PRE><B>ostrstream</B>(char* s, int n, ios_base::openmode |
| mode = ios_base::out); </PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>ostrstream</I></B>, initializing the base class <B><I><A HREF="basic-ostream.html">basic_ostream</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> |
| <UL> |
| <LI><P CLASS="LIST">If <SAMP>mode & app == 0</SAMP>, it calls <SAMP>strstreambuf(s,n,s)</SAMP></P></LI> |
| <LI><P CLASS="LIST">Otherwise it calls <SAMP>strstreambuf(s,n,s + ::strlen(s))</SAMP></P></LI> |
| </UL> |
| </UL> |
| |
| <A NAME="sec8"><H3>Destructors</H3></A> |
| |
| <A NAME="idx1086"></A><PRE>virtual <B>~ostrstream</B>();</PRE> |
| <UL> |
| <P>Destroys an object of class <B><I>ostrstream</I></B>. </P> |
| </UL> |
| |
| <A NAME="sec9"><H3>Member Functions</H3></A> |
| |
| <A NAME="idx1087"></A><PRE>void |
| <B>freeze</B>(bool freezefl = true); </PRE> |
| <UL> |
| <P>Calls <SAMP>rdbuf()->freeze(freezefl)</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1088"></A><PRE>int |
| <B>pcount</B>() const; </PRE> |
| <UL> |
| <P>Returns <SAMP>rdbuf()->pcount()</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1089"></A><PRE>strstreambuf* |
| <B>rdbuf</B>() const; </PRE> |
| <UL> |
| <P>Returns a pointer to the private <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object associated with the stream.</P> |
| </UL> |
| |
| |
| <A NAME="idx1090"></A><PRE>char* |
| <B>str</B>();</PRE> |
| <UL> |
| <P>Returns <SAMP>rdbuf()->str()</SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec10"><H3>Example</H3></A> |
| <P>See examples for <B><I><A HREF="strstream.html">strstream</A></I></B>, <B><I><A HREF="istrstream.html">istrstream</A></I></B>, and <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B>.</P> |
| <A NAME="sec11"><H3>See Also</H3></A> |
| <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="strstream.html">strstream</A></I></B></P> |
| <A NAME="sec12"><H3>Standards Conformance</H3></A> |
| <P><I>Deprecated. See ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++,</I> Annex D Compatibility features Section D.7.3</P> |
| |
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