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    <p>A single line of tags on a file can hardly be described as XML. Anyway, if you really want to parse a XML file, this could be accomplished so much easier using a parser library like <a href="http://rapidxml.sourceforge.net/" rel="nofollow">RapidXML</a>. <a href="http://www.ffuts.org/blog/quick-notes-on-how-to-use-rapidxml/" rel="nofollow">This page</a> is an excellent resource. </p> <p>The code below is my attempt to read the following XML (yes, a XML file must have a header):</p> <p>File: <strong>demo.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;rootnode version="1.0" type="example"&gt; &lt;Package&gt; xmlMetadata &lt;/Package&gt; &lt;/rootnode&gt; </code></pre> <p>A quick note: rapidxml is consisted only of headers. On my system I unzipped the library to <code>/usr/include/rapidxml-1.13</code>, so the code below could be compiled with: </p> <p><code>g++ read_tag.cpp -o read_tag -I/usr/include/rapidxml-1.13/</code></p> <p>File: <strong>read_tag.cpp</strong></p> <pre><code>#include &lt;iostream&gt; #include &lt;string&gt; #include &lt;vector&gt; #include &lt;fstream&gt; #include &lt;rapidxml.hpp&gt; using namespace std; using namespace rapidxml; int main() { string input_xml; string line; ifstream in("demo.xml"); // read file into input_xml while(getline(in,line)) input_xml += line; // make a safe-to-modify copy of input_xml // (you should never modify the contents of an std::string directly) vector&lt;char&gt; xml_copy(input_xml.begin(), input_xml.end()); xml_copy.push_back('\0'); // only use xml_copy from here on! xml_document&lt;&gt; doc; // we are choosing to parse the XML declaration // parse_no_data_nodes prevents RapidXML from using the somewhat surprising // behavior of having both values and data nodes, and having data nodes take // precedence over values when printing // &gt;&gt;&gt; note that this will skip parsing of CDATA nodes &lt;&lt;&lt; doc.parse&lt;parse_declaration_node | parse_no_data_nodes&gt;(&amp;xml_copy[0]); // alternatively, use one of the two commented lines below to parse CDATA nodes, // but please note the above caveat about surprising interactions between // values and data nodes (also read http://www.ffuts.org/blog/a-rapidxml-gotcha/) // if you use one of these two declarations try to use data nodes exclusively and // avoid using value() //doc.parse&lt;parse_declaration_node&gt;(&amp;xml_copy[0]); // just get the XML declaration //doc.parse&lt;parse_full&gt;(&amp;xml_copy[0]); // parses everything (slowest) // since we have parsed the XML declaration, it is the first node // (otherwise the first node would be our root node) string encoding = doc.first_node()-&gt;first_attribute("encoding")-&gt;value(); // encoding == "utf-8" // we didn't keep track of our previous traversal, so let's start again // we can match nodes by name, skipping the xml declaration entirely xml_node&lt;&gt;* cur_node = doc.first_node("rootnode"); string rootnode_type = cur_node-&gt;first_attribute("type")-&gt;value(); // rootnode_type == "example" // go straight to the first Package node cur_node = cur_node-&gt;first_node("Package"); string content = cur_node-&gt;value(); // if the node doesn't exist, this line will crash cout &lt;&lt; content &lt;&lt; endl; } </code></pre> <p><strong>Outputs:</strong></p> <p><code>xmlMetadata</code></p>
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    1. PORead a line from xml file using C++
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    1. USkarlphillip
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    1. COHey Karl, Thanks for helping. But actually I cannot use any of the build modules/parsers like Rapidxml or Tinyxml in this program. I need to have my own. Also the xml is not a one tag xml, its has a lot many tags... I didn't displayed it here just to make my query easier. :)
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    2. COWill this work for your needs?
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    3. CONo this won't :(
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