https://sourceforge.net/p/typp/wiki/File%2520macro/Recent changes to File macroenThu, 07 Jan 2016 10:59:59 -0000https://sourceforge.net/p/typp/wiki/File%2520macro/<div class="markdown_content"><pre>--- v1 +++ v2 @@ -10,8 +10,8 @@ // Print the current source file printf("File = %s\n",__FILE__); -#undef __LINE__ // Can't undef __LINE__ -#ifdef __LINE__ +#undef __FILE__ // Can't undef __FILE__ +#ifdef __FILE__ // This block will still be enabled #endif </pre> </div>CyderThu, 07 Jan 2016 10:59:59 -0000https://sourceforge.netde183d36e6fd61e9c70e887d8e608b9b52e93ddehttps://sourceforge.net/p/typp/wiki/File%2520macro/<div class="markdown_content"><p><strong>File macro</strong></p> <p>The c11 standard describes a macro called <code>__FILE__</code>, that always expands to a string constant for the file name.<br/> It is a predefined macro, that cannot be undefined or redefined.</p> <p>Hint: <code>__FILE__</code> is returned as a normal string token, thus allowing it to be used for string concantation.</p> <div class="codehilite"><pre><span class="c1">// Print the current source file</span> <span class="n">printf</span><span class="p">(</span><span class="s">"File = %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span><span class="n">__FILE__</span><span class="p">);</span> <span class="cp">#undef __LINE__ </span><span class="c1">// Can't undef __LINE__</span> <span class="cp">#ifdef __LINE__</span> <span class="c1">// This block will still be enabled</span> <span class="cp">#endif</span> </pre></div> <p>s.a. <span>[Conditional directives]</span><br/> s.a. <span>[Macros]</span></p></div>CyderThu, 07 Jan 2016 10:59:09 -0000https://sourceforge.net99bb80db772b55e0a674737d1eff513bd28ebae4