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  1. PO
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    <p>It depends on the size of the data you want to manipulate. My two samples has been tested.</p> <p>You can use a class which handles some raw pointers</p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;vector&gt; #include &lt;string&gt; class file_vector { public: file_vector() {} virtual ~file_vector() { for( std::vector&lt; std::ifstream* &gt;::iterator it = m_file_streams.begin(); it != m_file_streams.begin(); it++) { std::ifstream * p_stream = *it; delete p_stream; } } void append_file(const std::string&amp; file_name) { std::ifstream * p_stream = new std::ifstream( file_name.c_str() ); if(p_stream-&gt;is_open()) m_file_streams.push_back(p_stream); else delete p_stream; } void reset() { for( std::vector&lt; std::ifstream* &gt;::iterator it = m_file_streams.begin(); it != m_file_streams.end(); it++) { std::ifstream * p_stream = *it; p_stream-&gt;seekg(0,p_stream-&gt;beg); } } size_t size() { return m_file_streams.size(); } std::ifstream &amp; get(size_t index) { return * m_file_streams.at(index); // Using at because of index check } std::ifstream &amp; operator [] (size_t index) { return get(index); } private: std::vector&lt; std::ifstream* &gt; m_file_streams; }; int main() { file_vector files_content; files_content.append_file("file1.txt"); files_content.append_file("file2.txt"); files_content.append_file("file3.txt"); for(size_t i = 0; i &lt; files_content.size(); i++) { std::string current_line; while(std::getline(files_content[i],current_line)) std::cout &lt;&lt; current_line &lt;&lt; std::endl; } files_content.reset(); // To make getline usable again return 0; } </code></pre> <p>Or a std::vector&lt; std::vector&lt; std::string > >. That's a basic solution for small files but it works.</p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;vector&gt; #include &lt;string&gt; typedef std::vector&lt; std::string &gt; string_vec; typedef std::vector&lt; std::string &gt;::iterator string_it; typedef std::vector&lt; string_vec&gt; file_vec; typedef std::vector&lt; string_vec &gt;::iterator file_it; int main() { string_vec file_names; file_names.push_back("file1.txt"); file_names.push_back("file2.txt"); file_names.push_back("file3.txt"); file_vec files_content; string_vec empty_file_content; for(string_it file_name = file_names.begin(); file_name != file_names.end(); file_name++) { std::ifstream input_stream( file_name-&gt;c_str() ); files_content.push_back(empty_file_content); if(input_stream.is_open()) { string_vec &amp; current_file_content = files_content[ files_content.size() - 1 ]; std::string current_line; while(std::getline(input_stream, current_line)) current_file_content.push_back(current_line); } } // Some stuff // Reading the content later on for(file_it file = files_content.begin(); file != files_content.end(); file++) { for(string_it line = file-&gt;begin(); line != file-&gt;end(); line++) { std::cout &lt;&lt; *line &lt;&lt; std::endl; } } return 0; } </code></pre>
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    1. POHow to write the content of different files to a vector for further use with getline
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    1. USJean-Bernard Jansen
    1. USJean-Bernard Jansen
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    1. COIt looks fine, thanks!!
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      1. USChristoph
    2. CObe careful, i added a fix in `file_vector::append_file` (damn these raw pointers ^^)
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      1. USJean-Bernard Jansen
 

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