<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <html lang="en"> <head> <meta http-equiv="Content-Language" content="en-us"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Commenting out code</title> <link rel="stylesheet" type="text/css" href="../help.css"> </head> <body> <h1>Commenting out code</h1> <p>You can comment out one or more lines of code in any C/C++ editor view. The leading characters <samp>//</samp> are added to the beginning of each line when commenting one or more lines of code. You can also block comment multiple lines of code using the characters <samp>/* */</samp>.</p> <p><strong>Tip:</strong> The characters <samp>/* */</samp> on lines that already are already commented out are not affected when you comment and uncomment code as described above.</p> <p><img src="../images/cdt_menu_toggle_comments.png" alt="Commenting out code menu choices"></p> <p>To toggle <samp>//</samp> comments on code:</p> <ol> <li>In the C/C++ editor, select the line(s) of code that you want to comment out. If no lines are selected comments will be added (or removed) at the current cursor position.</li> <li>Right-click and select <strong>Source > Toggle Comment</strong>. (<samp>CTRL+/</samp>)</li> </ul> </ol> <p>To block comment <samp>/* */</samp> code:</p> <ol> <li>In the C/C++ editor, select multiple line(s) of code to comment out.</li> <li>To comment out multiple code lines right-click and select <strong>Source > Add Block Comment</strong>. (<samp>CTRL+SHIFT+/</samp>)</li> <li>To uncomment multiple code lines right-click and select <strong>Source > Remove Block Comment</strong>. (<samp>CTRL+SHIFT+\</samp>)</li> </ul> </ol> <p><img border="0" src="../images/ngconcepts.gif" ALT="Related concepts" width="143" height="21"> <br> <a href="../concepts/cdt_o_code_entry.htm">Code entry</a></p> <p><img border="0" src="../images/ngtasks.gif" ALT="Related tasks" width="143" height="21"> <br> <a href="cdt_t_cust_cpp_editor.htm">Customizing the C/C++ editor</a><br> <a href="cdt_o_con_assist.htm">Working with Content Assist</a></p> <p><img border="0" src="../images/ngref.gif" ALT="Related reference" width="143" height="21"> <br> <a href="../reference/cdt_o_ceditor_pref.htm">C/C++ editor preferences</a></p> <hr > <img src="../images/ng00_04a.gif" ALT="IBM Copyright Statement" > </body> </html>