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- <h2 class="sectionedit1"><a name="constant_escape_sequences" id="constant_escape_sequences">Constant Escape Sequences</a></h2>
- <div class="level2">
- <p>
- The following escape sequences can be used to define certain special characters
- within strings:
- </p>
- <div class="table sectionedit2"><table class="inline">
- <tr class="row0">
- <th class="col0 centeralign"> Escape Sequence </th><th class="col1 centeralign"> Description </th>
- </tr>
- <tr class="row1">
- <td class="col0">\'</td><td class="col1">Single quote</td>
- </tr>
- <tr class="row2">
- <td class="col0">\â</td><td class="col1">Double quote</td>
- </tr>
- <tr class="row3">
- <td class="col0">\\</td><td class="col1">Backslash</td>
- </tr>
- <tr class="row4">
- <td class="col0">\nnn</td><td class="col1">Octal number (nnn)</td>
- </tr>
- <tr class="row5">
- <td class="col0">\0</td><td class="col1">Null character (really just the octal number zero)</td>
- </tr>
- <tr class="row6">
- <td class="col0">\a</td><td class="col1">Audible bell</td>
- </tr>
- <tr class="row7">
- <td class="col0">\b</td><td class="col1">Backspace</td>
- </tr>
- <tr class="row8">
- <td class="col0">\f</td><td class="col1">Formfeed</td>
- </tr>
- <tr class="row9">
- <td class="col0">\n</td><td class="col1">Newline</td>
- </tr>
- <tr class="row10">
- <td class="col0">\r</td><td class="col1">Carriage return</td>
- </tr>
- <tr class="row11">
- <td class="col0">\t</td><td class="col1">Horizontal tab</td>
- </tr>
- <tr class="row12">
- <td class="col0">\v</td><td class="col1">Vertical tab</td>
- </tr>
- <tr class="row13">
- <td class="col0">\xnn</td><td class="col1">Hexadecimal number (nn)</td>
- </tr>
- </table></div>
- <!-- EDIT2 TABLE [135-455] -->
- <p>
- An example of this is contained in the following code (which assumes that the
- newline character generates complete newlines, i.e. on Unix systems):
- </p>
- <pre class="cpp code cpp"> <span class="kw3">printf</span><span class="br0">(</span> <span class="st0">"This<span class="es1">\n</span>is<span class="es1">\n</span>a<span class="es1">\n</span>test<span class="es1">\n</span><span class="es1">\n</span>She said, <span class="es1">\"</span>How are you?<span class="es1">\"</span><span class="es1">\n</span>"</span> <span class="br0">)</span><span class="sy4">;</span></pre>
- <p>
- which would display
- </p>
- <pre class="code">
- This
- is
- a
- test
- She said, "How are you?"</pre>
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