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<tr class="t-nv-h2"><td colspan="5"> <a href="expressions.html#Operators" title="c/language/expressions">operators</a> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_precedence.html" title="c/language/operator precedence"><span class="t-lines"><span>operator precedence</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_member_access.html" title="c/language/operator member access"><span class="t-lines"><span>member access and indirection</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>logical operators</span></span></strong></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_comparison.html" title="c/language/operator comparison"><span class="t-lines"><span>comparison operators</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_arithmetic.html" title="c/language/operator arithmetic"><span class="t-lines"><span>arithmetic operators</span></span></a></div></div></td></tr>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_incdec.html" title="c/language/operator incdec"><span class="t-lines"><span>increment and decrement</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_other.html" title="c/language/operator other"><span class="t-lines"><span>function call, comma, conditional operator</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="sizeof.html" title="c/language/sizeof"><span class="t-lines"><span>sizeof</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="alignof.html" title="c/language/ Alignof"><span class="t-lines"><span>alignof</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="cast.html" title="c/language/cast"><span class="t-lines"><span>cast operators</span></span></a></div></div></td></tr>
</table></div>
</div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/language/expressions/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div></div>
<p>Logical operators apply standard boolean algebra operations to their operands.
</p>
<table class="wikitable" style="font-size:85%;">
<tr style="text-align:center">
<th> Operator
</th>
<th> Operator name
</th>
<th> Example
</th>
<th> Result
</th></tr>
<tr style="text-align:center">
<td> <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span></span></span>
</td>
<td> logical NOT
</td>
<td> <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>a</span></span>
</td>
<td> the logical negation of <b>a</b>
</td></tr>
<tr style="text-align:center">
<td> <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">&&</span></span></span>
</td>
<td> logical AND
</td>
<td> <span class="t-c"><span class="mw-geshi c source-c">a <span class="sy3">&&</span> b</span></span>
</td>
<td> the logical AND of <b>a</b> and <b>b</b>
</td></tr>
<tr style="text-align:center">
<td> <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">||</span></span></span>
</td>
<td> logical OR
</td>
<td> <span class="t-c"><span class="mw-geshi c source-c">a <span class="sy3">||</span> b</span></span>
</td>
<td> the logical OR of <b>a</b> and <b>b</b>
</td></tr></table>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="operator_logical.html#Logical_NOT"><span class="tocnumber">1</span> <span class="toctext">Logical NOT</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="operator_logical.html#Logical_AND"><span class="tocnumber">2</span> <span class="toctext">Logical AND</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="operator_logical.html#Logical_OR"><span class="tocnumber">3</span> <span class="toctext">Logical OR</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="operator_logical.html#References"><span class="tocnumber">4</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="operator_logical.html#See_Also"><span class="tocnumber">5</span> <span class="toctext">See Also</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="operator_logical.html#See_also_2"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=1" title="Edit section: Logical NOT">edit</a>]</span> <span class="mw-headline" id="Logical_NOT">Logical NOT</span></h3>
<p>The logical NOT expression has the form
</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"> <code><b>!</b></code> <span class="t-spar">expression</span>
</td>
<td class="t-sdsc-nopad">
</td>
<td class="t-sdsc-nopad">
</td></tr>
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr></table>
<p>where
</p>
<table class="t-par-begin">
<tr class="t-par">
<td> <span class="t-spar">expression</span>
</td>
<td> -
</td>
<td> an expression of any <a href="compatible_type.html#Type_groups" title="c/language/type">scalar type</a>
</td></tr></table>
<p>The logical NOT operator has type <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>. Its value is <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> if <span class="t-spar">expression</span> evaluates to a value that compares unequal to zero. Its value is <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if <span class="t-spar">expression</span> evaluates to a value that compares equal to zero. (so <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>E</span></span> is the same as <span class="t-c"><span class="mw-geshi c source-c"><span class="br0">(</span><span class="nu0">0</span><span class="sy1">==</span>E<span class="br0">)</span></span></span>)
</p>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include <stdbool.h></span>
<span class="co2">#include <stdio.h></span>
<span class="co2">#include <ctype.h></span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="sy3">!</span><span class="br0">(</span><span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">4</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// not true</span>
<a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"!(2+2==4) = %s<span class="es1">\n</span>"</span>, b <span class="sy4">?</span> <span class="st0">"true"</span> <span class="sy4">:</span> <span class="st0">"false"</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw4">int</span> n <span class="sy1">=</span> <a href="../string/byte/isspace.html"><span class="kw534">isspace</span></a><span class="br0">(</span><span class="st0">'a'</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// zero if 'a' is a space, nonzero otherwise</span>
<span class="kw4">int</span> x <span class="sy1">=</span> <span class="sy3">!!</span>n<span class="sy4">;</span> <span class="co1">// "bang-bang", common C idiom for mapping integers to [0,1]</span>
<span class="co1">// (all non-zero values become 1)</span>
<span class="kw4">char</span> <span class="sy2">*</span>a<span class="br0">[</span><span class="nu0">2</span><span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="st0">"nonspace"</span>, <span class="st0">"space"</span><span class="br0">}</span><span class="sy4">;</span>
<a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"%s<span class="es1">\n</span>"</span>, a<span class="br0">[</span>x<span class="br0">]</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// now x can be safely used as an index to array of 2 ints</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">!(2+2==4) = false
nonspace</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=2" title="Edit section: Logical AND">edit</a>]</span> <span class="mw-headline" id="Logical_AND">Logical AND</span></h3>
<p>The logical AND expression has the form
</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"> <span class="t-spar">lhs</span> <code><b>&&</b></code> <span class="t-spar">rhs</span>
</td>
<td class="t-sdsc-nopad">
</td>
<td class="t-sdsc-nopad">
</td></tr>
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr></table>
<p>where
</p>
<table class="t-par-begin">
<tr class="t-par">
<td> <span class="t-spar">lhs</span>
</td>
<td> -
</td>
<td> an expression of any scalar type
</td></tr>
<tr class="t-par">
<td> <span class="t-spar">rhs</span>
</td>
<td> -
</td>
<td> an expression of any scalar type, which is only evaluated if <span class="t-spar">lhs</span> does not compare equal to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span>
</td></tr></table>
<p>The logical-AND operator has type <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> and the value <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if both <span class="t-spar">lhs</span> and <span class="t-spar">rhs</span> compare unequal to zero. It has the value <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> otherwise (if either <span class="t-spar">lhs</span> or <span class="t-spar">rhs</span> or both compare equal to zero).
</p><p>There is a <a href="eval_order.html" title="c/language/eval order">sequence point</a> after the evaluation of <span class="t-spar">lhs</span>. If the result of <span class="t-spar">lhs</span> compares equal to zero, then <span class="t-spar">rhs</span> is not evaluated at all (so-called <i>short-cirquit evaluation</i>)
</p>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include <stdbool.h></span>
<span class="co2">#include <stdio.h></span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span><span class="sy1">==</span><span class="nu0">4</span> <span class="sy3">&&</span> <span class="nu0">2</span><span class="sy2">*</span><span class="nu0">2</span><span class="sy1">==</span><span class="nu0">4</span><span class="sy4">;</span> <span class="co1">// b == true</span>
 
<span class="nu0">1</span> <span class="sy1">></span> <span class="nu0">2</span> <span class="sy3">&&</span> <a href="../io/puts.html"><span class="kw836">puts</span></a><span class="br0">(</span><span class="st0">"this won't print"</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw4">char</span> <span class="sy2">*</span>p <span class="sy1">=</span> <span class="st0">"abc"</span><span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>p <span class="sy3">&&</span> <span class="sy2">*</span>p<span class="br0">)</span> <span class="co1">// common C idiom: if p is not null</span>
<span class="co1">// AND if p does not point at the end of the string</span>
<span class="br0">{</span> <span class="co1">// (note that thanks to short-circuit evaluation, this</span>
<span class="co1">// will not attempt to dereference a null pointer)</span>
<span class="co1">// ... // ... then do some string processing</span>
<span class="br0">}</span>
<span class="br0">}</span></pre></div></div>
<p><br />
</p>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=3" title="Edit section: Logical OR">edit</a>]</span> <span class="mw-headline" id="Logical_OR">Logical OR</span></h3>
<p>The logical OR expression has the form
</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"> <span class="t-spar">lhs</span> <code><b></td>
<td></b></code> <span class="t-spar">rhs</span>
</td>
<td class="t-sdsc-nopad">
</td>
<td class="t-sdsc-nopad">
</td></tr>
<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr></table>
<p>where
</p>
<table class="t-par-begin">
<tr class="t-par">
<td> <span class="t-spar">lhs</span>
</td>
<td> -
</td>
<td> an expression of any scalar type
</td></tr>
<tr class="t-par">
<td> <span class="t-spar">rhs</span>
</td>
<td> -
</td>
<td> an expression of any scalar type, which is only evaluated if <span class="t-spar">lhs</span> compares equal to <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span>
</td></tr></table>
<p>The logical-OR operator has type <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> and the value <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> if either <span class="t-spar">lhs</span> or <span class="t-spar">rhs</span> compare unequal to zero. It has value <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> otherwise (if both <span class="t-spar">lhs</span> and <span class="t-spar">rhs</span> compare equal to zero).
</p><p>There is a <a href="eval_order.html" title="c/language/eval order">sequence point</a> after the evaluation of <span class="t-spar">lhs</span>. If the result of <span class="t-spar">lhs</span> compares unequal to zero, then <span class="t-spar">rhs</span> is not evaluated at all (so-called <i>short-cirquit evaluation</i>)
</p>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include <stdbool.h></span>
<span class="co2">#include <stdio.h></span>
<span class="co2">#include <string.h></span>
<span class="co2">#include <errno.h></span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">4</span> <span class="sy3">||</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="co1">// true</span>
<a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"true or false = %s<span class="es1">\n</span>"</span>, b <span class="sy4">?</span> <span class="st0">"true"</span> <span class="sy4">:</span> <span class="st0">"false"</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// logical OR can be used simialar to perl's "or die", as long as rhs has scalar type</span>
<a href="../io/fopen.html"><span class="kw819">fopen</span></a><span class="br0">(</span><span class="st0">"test.txt"</span>, <span class="st0">"r"</span><span class="br0">)</span> <span class="sy3">||</span> <a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"could not open test.txt: %s<span class="es1">\n</span>"</span>, <a href="../string/byte/strerror.html"><span class="kw574">strerror</span></a><span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">true or false = true
could not open test.txt: No such file or directory</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=4" title="Edit section: References">edit</a>]</span> <span class="mw-headline" id="References">References</span></h3>
<div class="t-ref-std-11">
<ul><li> C11 standard (ISO/IEC 9899:2011):
</li></ul>
<dl><dd><ul><li> 6.5.3.3 Unary arithmetic operators (p: 89)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 6.5.13 Logical AND operator (p: 99)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 6.5.14 Logical OR operator (p: 99)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999):
</li></ul>
<dl><dd><ul><li> 6.5.3.3 Unary arithmetic operators (p: 79)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 6.5.13 Logical AND operator (p: 89)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 6.5.14 Logical OR operator (p: 89)
</li></ul>
</dd></dl>
<div class="t-ref-std-c89">
<ul><li> C89/C90 standard (ISO/IEC 9899:1990):
</li></ul>
<dl><dd><ul><li> 3.3.3.3 Unary arithmetic operators
</li></ul>
</dd></dl>
<dl><dd><ul><li> 3.3.13 Logical AND operator
</li></ul>
</dd></dl>
<dl><dd><ul><li> 3.3.14 Logical OR operator
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=5" title="Edit section: See Also">edit</a>]</span> <span class="mw-headline" id="See_Also">See Also</span></h3>
<p><a href="operator_precedence.html" title="c/language/operator precedence"> Operator precedence</a>
</p>
<table class="wikitable">
<tr style="text-align:center">
<th colspan="7"> Common operators
</th></tr>
<tr style="text-align:center">
<td> <a href="operator_assignment.html" title="c/language/operator assignment"> assignment</a>
</td>
<td> <a href="operator_incdec.html" title="c/language/operator incdec"> increment<br />decrement</a>
</td>
<td> <a href="operator_arithmetic.html" title="c/language/operator arithmetic"> arithmetic</a>
</td>
<td> <strong class="selflink"> logical</strong>
</td>
<td> <a href="operator_comparison.html" title="c/language/operator comparison"> comparison</a>
</td>
<td> <a href="operator_member_access.html" title="c/language/operator member access"> member<br />access</a>
</td>
<td> <a href="operator_other.html" title="c/language/operator other"> other</a>
</td></tr>
<tr style="text-align:center">
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy1">=</span> b<br />
a <span class="sy2">+</span><span class="sy1">=</span> b<br />
a <span class="sy2">-</span><span class="sy1">=</span> b<br />
a <span class="sy2">*</span><span class="sy1">=</span> b<br />
a <span class="sy2">/</span><span class="sy1">=</span> b<br />
a <span class="sy2">%</span><span class="sy1">=</span> b<br />
a <span class="sy3">&</span><span class="sy1">=</span> b<br />
a <span class="sy3">|</span><span class="sy1">=</span> b<br />
a <span class="sy3">^</span><span class="sy1">=</span> b<br />
a <span class="sy1"><<=</span> b<br />
a <span class="sy1">>>=</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy2">++</span>a<br />
<span class="sy2">--</span>a<br />
a<span class="sy2">++</span><br />
a<span class="sy2">--</span></span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy2">+</span>a<br />
<span class="sy2">-</span>a<br />
a <span class="sy2">+</span> b<br />
a <span class="sy2">-</span> b<br />
a <span class="sy2">*</span> b<br />
a <span class="sy2">/</span> b<br />
a <span class="sy2">%</span> b<br />
~a<br />
a <span class="sy3">&</span> b<br />
a <span class="sy3">|</span> b<br />
a <span class="sy3">^</span> b<br />
a <span class="sy1"><<</span> b<br />
a <span class="sy1">>></span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>a<br />
a <span class="sy3">&&</span> b<br />
a <span class="sy3">||</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy1">==</span> b<br />
a <span class="sy3">!</span><span class="sy1">=</span> b<br />
a <span class="sy1"><</span> b<br />
a <span class="sy1">></span> b<br />
a <span class="sy1"><=</span> b<br />
a <span class="sy1">>=</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a<span class="br0">[</span>b<span class="br0">]</span><br />
<span class="sy2">*</span>a<br />
<span class="sy3">&</span>a<br />
a<span class="sy2">-</span><span class="sy1">></span>b<br />
a.<span class="me1">b</span></span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a<span class="br0">(</span>...<span class="br0">)</span><br />
a, b<br />
<span class="br0">(</span>type<span class="br0">)</span> a<br />
<span class="sy4">?</span> <span class="sy4">:</span><br />
<span class="kw4">sizeof</span><br />
_Alignof</span></span> <span class="t-mark-rev t-since-c11">(since C11)</span>
</p>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/operator_logical&action=edit&section=6" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also_2">See also</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../cpp/language/operator_logical.html" title="cpp/language/operator logical">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>Logical operators</span></span></div>
</td></tr>
</table></div>
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