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<tr class="t-nv"><td colspan="5"> <a href="nullptr.html" title="cpp/language/nullptr">null pointer literal</a><span class="t-mark-rev t-since-cxx11">(C++11)</span></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="user_literal.html" title="cpp/language/user literal">user-defined literal</a><span class="t-mark-rev t-since-cxx11">(C++11)</span></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Operators </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_assignment.html" title="cpp/language/operator assignment"> Assignment operators</a>: 
<code>a=b</code>, <code>a+=b</code>, <code>a-=b</code>, <code>a*=b</code>, <code>a/=b</code>, <code>a%=b</code>, <code>a&amp;=b</code>, <code>a|=b</code>, <code>a^=b</code>, <code>a&lt;&lt;=b</code>, <code>a&gt;&gt;=</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_incdec.html" title="cpp/language/operator incdec"> Increment and decrement</a>: <code>++a</code>, <code>--a</code>, <code>a++</code>, <code>a--</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_arithmetic.html" title="cpp/language/operator arithmetic"> Arithmetic operators</a>:
<code>+a</code>, <code>-a</code>, <code>a+b</code>, <code>a-b</code>, <code>a*b</code>, <code>a/b</code>, <code>a%b</code>, <code>~a</code>, <code>a&amp;b</code>, <code>a|b</code>, <code>a^b</code>, <code>a&lt;&lt;b</code>, <code>a&gt;&gt;b</code> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_logical.html" title="cpp/language/operator logical"> Logical operators</a>: <code>a||b</code>, <code>a&amp;&amp;b</code>, <code>!a</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_comparison.html" title="cpp/language/operator comparison"> Comparison operators</a>: <code>a==b</code>, <code>a!=b</code>, <code>a&lt;b</code>, <code>a&gt;b</code>, <code>a&lt;=b</code>, <code>a&gt;=b</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_member_access.html" title="cpp/language/operator member access"> Member access operators</a>: <code>a[b]</code>, <code>*a</code>, <code>&amp;a</code>, <code>a-&gt;b</code>, <code>a.b</code>, <code>a-&gt;*b</code>, <code>a.*b</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_other.html" title="cpp/language/operator other"> Other operators</a>: <code>a(...)</code>, <code>a,b</code>, <code>a?b:c</code> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operator_alternative.html" title="cpp/language/operator alternative">Alternative representations of operators</a></td></tr>
<tr class="t-nv"><td colspan="5"> <strong class="selflink">Precedence and associativity</strong></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="fold.html" title="cpp/language/fold">Fold expression</a><span class="t-mark-rev t-since-cxx17">(C++17)</span></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="new.html" title="cpp/language/new">new-expression</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="delete.html" title="cpp/language/delete">delete-expression</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="throw.html" title="cpp/language/throw">throw-expression</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="alignof.html" title="cpp/language/alignof">alignof</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="sizeof.html" title="cpp/language/sizeof">sizeof</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="sizeof....html" title="cpp/language/sizeof...">sizeof...</a><span class="t-mark-rev t-since-cxx11">(C++11)</span></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="typeid.html" title="cpp/language/typeid">typeid</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="noexcept.html" title="cpp/language/noexcept">noexcept</a><span class="t-mark-rev t-since-cxx11">(C++11)</span></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="operators.html" title="cpp/language/operators">Operator overloading</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Conversions </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="implicit_cast.html" title="cpp/language/implicit cast">Implicit conversions</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="const_cast.html" title="cpp/language/const cast">const_cast</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="static_cast.html" title="cpp/language/static cast">static_cast</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="reinterpret_cast.html" title="cpp/language/reinterpret cast">reinterpret_cast</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="dynamic_cast.html" title="cpp/language/dynamic cast">dynamic_cast</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="explicit_cast.html" title="cpp/language/explicit cast">Explicit conversions</a> <code>(T)a</code>, <code>T(a)</code></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="cast_operator.html" title="cpp/language/cast operator">User-defined conversion</a></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:cpp/language/expressions/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div></div>
<p>The following table lists the precedence and associativity of C++ operators. Operators are listed top to bottom, in descending precedence. 
</p>
<table class="wikitable">

<tr>
<th style="text-align: left"> Precedence
</th>
<th style="text-align: left"> Operator
</th>
<th style="text-align: left"> Description
</th>
<th style="text-align: left"> Associativity
</th></tr>
<tr>
<th> 1
</th>
<td> <code>::</code>
</td>
<td> <a href="name.html#Qualified_identifiers" title="cpp/language/identifiers">Scope resolution</a>
</td>
<td style="vertical-align: top" rowspan="6"> Left-to-right
</td></tr>
<tr>
<th rowspan="5"> 2
</th>
<td style="border-bottom-style: none"> <code>++</code>   <code>--</code>
</td>
<td style="border-bottom-style: none"> Suffix/postfix <a href="operator_incdec.html" title="cpp/language/operator incdec">increment and decrement</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code><i>type</i>()</code>   <code><i>type</i>{}</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="explicit_cast.html" title="cpp/language/explicit cast">Functional cast</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>()</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_other.html#Built-in_function_call_operator" title="cpp/language/operator other">Function call</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>[]</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_member_access.html#Built-in_subscript_operator" title="cpp/language/operator member access">Subscript</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>.</code>   <code>-&gt;</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_member_access.html#Built-in_member_access_operators" title="cpp/language/operator member access">Member access</a>
</td></tr>
<tr>
<th rowspan="9"> 3
</th>
<td style="border-bottom-style: none"> <code>++</code>   <code>--</code>
</td>
<td style="border-bottom-style: none"> Prefix <a href="operator_incdec.html" title="cpp/language/operator incdec">increment and decrement</a>
</td>
<td style="vertical-align: top" rowspan="9"> Right-to-left
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>+</code>   <code>-</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> Unary <a href="operator_arithmetic.html#Additive_operators" title="cpp/language/operator arithmetic">plus and minus</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>!</code>   <code>~</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_logical.html" title="cpp/language/operator logical">Logical NOT</a> and <a href="operator_arithmetic.html#Bitwise_logic_operators" title="cpp/language/operator arithmetic">bitwise NOT</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>(<i>type</i>)</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="explicit_cast.html" title="cpp/language/explicit cast">C-style cast</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>*</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_member_access.html#Built-in_indirection_operator" title="cpp/language/operator member access">Indirection</a> (dereference)
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>&amp;</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_member_access.html#Built-in_address-of_operator" title="cpp/language/operator member access">Address-of</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>sizeof</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="sizeof.html" title="cpp/language/sizeof">Size-of</a><sup id="cite_ref-1" class="reference"><a href="operator_precedence.html#cite_note-1">[note 1]</a></sup>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>new</code>   <code>new[]</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="new.html" title="cpp/language/new">Dynamic memory allocation</a>
</td></tr>
<tr>
<td style="border-top-style: none"> <code>delete</code>   <code>delete[]</code>
</td>
<td style="border-top-style: none"> <a href="delete.html" title="cpp/language/delete">Dynamic memory deallocation</a>
</td></tr>
<tr>
<th> 4
</th>
<td> <code>.*</code>   <code>-&gt;*</code>
</td>
<td> <a href="operator_member_access.html#Built-in_pointer-to-member_access_operators" title="cpp/language/operator member access">Pointer-to-member</a>
</td>
<td style="vertical-align: top" rowspan="12"> Left-to-right
</td></tr>
<tr>
<th> 5
</th>
<td> <code>*</code>   <code>/</code>   <code>%</code>
</td>
<td> <a href="operator_arithmetic.html#Multiplicative_operators" title="cpp/language/operator arithmetic">Multiplication, division, and remainder</a>
</td></tr>
<tr>
<th> 6
</th>
<td> <code>+</code>   <code>-</code>
</td>
<td> <a href="operator_arithmetic.html#Additive_operators" title="cpp/language/operator arithmetic">Addition and subtraction</a>
</td></tr>
<tr>
<th> 7
</th>
<td> <code>&lt;&lt;</code>   <code>&gt;&gt;</code>
</td>
<td> Bitwise <a href="operator_arithmetic.html#Bitwise_shift_operators" title="cpp/language/operator arithmetic">left shift and right shift</a>
</td></tr>
<tr>
<th rowspan="2"> 8
</th>
<td style="border-bottom-style: none"> <code>&lt;</code>   <code>&lt;=</code>
</td>
<td style="border-bottom-style: none"> For <a href="operator_comparison.html" title="cpp/language/operator comparison">relational operators</a> &lt; and ≤ respectively
</td></tr>
<tr>
<td style="border-top-style: none"> <code>&gt;</code>   <code>&gt;=</code>
</td>
<td style="border-top-style: none"> For <a href="operator_comparison.html" title="cpp/language/operator comparison">relational operators</a> &gt; and ≥ respectively
</td></tr>
<tr>
<th> 9
</th>
<td> <code>==</code>   <code>!=</code>
</td>
<td> For <a href="operator_comparison.html" title="cpp/language/operator comparison">relational operators</a> = and ≠ respectively
</td></tr>
<tr>
<th> 10
</th>
<td> <code>&amp;</code>
</td>
<td> <a href="operator_arithmetic.html#Bitwise_logic_operators" title="cpp/language/operator arithmetic">Bitwise AND</a>
</td></tr>
<tr>
<th> 11
</th>
<td> <code>^</code>
</td>
<td> <a href="operator_arithmetic.html#Bitwise_logic_operators" title="cpp/language/operator arithmetic">Bitwise XOR</a> (exclusive or)
</td></tr>
<tr>
<th> 12
</th>
<td> <code>|</code>
</td>
<td> <a href="operator_arithmetic.html#Bitwise_logic_operators" title="cpp/language/operator arithmetic">Bitwise OR</a> (inclusive or)
</td></tr>
<tr>
<th> 13
</th>
<td> <code>&amp;&amp;</code>
</td>
<td> <a href="operator_logical.html" title="cpp/language/operator logical">Logical AND</a>
</td></tr>
<tr>
<th> 14
</th>
<td> <code>||</code>
</td>
<td> <a href="operator_logical.html" title="cpp/language/operator logical">Logical OR</a>
</td></tr>
<tr>
<th rowspan="7"> 15
</th>
<td style="border-bottom-style: none"> <code>?:</code>
</td>
<td style="border-bottom-style: none"> <a href="operator_other.html#Conditional_operator" title="cpp/language/operator other">Ternary conditional</a><sup id="cite_ref-2" class="reference"><a href="operator_precedence.html#cite_note-2">[note 2]</a></sup>
</td>
<td style="vertical-align: top" rowspan="7"> Right-to-left
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>throw</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="throw.html" title="cpp/language/throw">throw operator</a>
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>=</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_assignment.html#Builtin_direct_assignment" title="cpp/language/operator assignment">Direct assignment</a> (provided by default for C++ classes)
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>+=</code>   <code>-=</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_assignment.html#Builtin_compound_assignment" title="cpp/language/operator assignment">Compound assignment</a> by sum and difference
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>*=</code>   <code>/=</code>   <code>%=</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_assignment.html#Builtin_compound_assignment" title="cpp/language/operator assignment">Compound assignment</a> by product, quotient, and remainder
</td></tr>
<tr>
<td style="border-bottom-style: none; border-top-style: none"> <code>&lt;&lt;=</code>   <code>&gt;&gt;=</code>
</td>
<td style="border-bottom-style: none; border-top-style: none"> <a href="operator_assignment.html#Builtin_compound_assignment" title="cpp/language/operator assignment">Compound assignment</a> by bitwise left shift and right shift
</td></tr>
<tr>
<td style="border-top-style: none"> <code>&amp;=</code>   <code>^=</code>   <code>|=</code>
</td>
<td style="border-top-style: none"> <a href="operator_assignment.html#Builtin_compound_assignment" title="cpp/language/operator assignment">Compound assignment</a> by bitwise AND, XOR, and OR
</td></tr>
<tr>
<th> 16
</th>
<td> <code>,</code>
</td>
<td> <a href="operator_other.html#Built-in_comma_operator" title="cpp/language/operator other">Comma</a>
</td>
<td> Left-to-right
</td></tr></table>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="operator_precedence.html#cite_ref-1">↑</a></span> <span class="reference-text">The operand of <code>sizeof</code> can't be a C-style type cast: the expression <code>sizeof (int) * p</code> is unambiguously interpreted as <code>(sizeof(int)) * p</code>, but not <code>sizeof((int)*p)</code>.</span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="operator_precedence.html#cite_ref-2">↑</a></span> <span class="reference-text">The expression in the middle of the conditional operator (between <code><b>?</b></code> and <code><b>:</b></code>) is parsed as if parenthesized: its precedence relative to <code>?:</code> is ignored.</span>
</li>
</ol>
<p>When parsing an expression, an operator which is listed on some row of the table above with a precedence will be bound tighter (as if by parentheses) to its arguments than any operator that is listed on a row further below it with a lower precedence. For example, the expressions <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> a <span class="sy3">&amp;</span> b</span></span> and  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>p<span class="sy2">++</span></span></span> are parsed as <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span><a href="../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> a<span class="br0">&#41;</span> <span class="sy3">&amp;</span> b</span></span> and <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span><span class="br0">&#40;</span>p<span class="sy2">++</span><span class="br0">&#41;</span></span></span>, and not as <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="br0">&#40;</span>a <span class="sy3">&amp;</span> b<span class="br0">&#41;</span></span></span> or <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span><span class="sy2">*</span>p<span class="br0">&#41;</span><span class="sy2">++</span></span></span>.
</p><p>Operators that have the same precedence are bound to their arguments in the direction of their associativity. For example, the expression <span class="t-c"><span class="mw-geshi cpp source-cpp">a <span class="sy1">=</span> b <span class="sy1">=</span> c</span></span> is parsed as <span class="t-c"><span class="mw-geshi cpp source-cpp">a <span class="sy1">=</span> <span class="br0">&#40;</span>b <span class="sy1">=</span> c<span class="br0">&#41;</span></span></span>, and not as <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span>a <span class="sy1">=</span> b<span class="br0">&#41;</span> <span class="sy1">=</span> c</span></span> because of right-to-left associativity of assignment, but <span class="t-c"><span class="mw-geshi cpp source-cpp">a <span class="sy2">+</span> b <span class="sy2">-</span> c</span></span> is parsed <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span>a <span class="sy2">+</span> b<span class="br0">&#41;</span> <span class="sy2">-</span> c</span></span> and not <span class="t-c"><span class="mw-geshi cpp source-cpp">a <span class="sy2">+</span> <span class="br0">&#40;</span>b <span class="sy2">-</span> c<span class="br0">&#41;</span></span></span> because of left-to-right associativity of addition and subtraction.
</p><p>Associativity specification is redundant for unary operators and is only shown for completeness: unary prefix operators always associate right-to-left (<span class="t-c"><span class="mw-geshi cpp source-cpp">delete <span class="sy2">++*</span>p</span></span> is <span class="t-c"><span class="mw-geshi cpp source-cpp">delete<span class="br0">&#40;</span><span class="sy2">++</span><span class="br0">&#40;</span><span class="sy2">*</span>p<span class="br0">&#41;</span><span class="br0">&#41;</span></span></span>) and unary postfix operators always associate left-to-right (<span class="t-c"><span class="mw-geshi cpp source-cpp">a<span class="br0">&#91;</span><span class="nu0">1</span><span class="br0">&#93;</span><span class="br0">&#91;</span><span class="nu0">2</span><span class="br0">&#93;</span><span class="sy2">++</span></span></span> is <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span><span class="br0">&#40;</span>a<span class="br0">&#91;</span><span class="nu0">1</span><span class="br0">&#93;</span><span class="br0">&#41;</span><span class="br0">&#91;</span><span class="nu0">2</span><span class="br0">&#93;</span><span class="br0">&#41;</span><span class="sy2">++</span></span></span>). Note that the associativity is meaningful for member access operators, even though they are grouped with unary postfix operators: <span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="me1">b</span><span class="sy2">++</span></span></span> is parsed <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">&#40;</span>a.<span class="me1">b</span><span class="br0">&#41;</span><span class="sy2">++</span></span></span> and not <span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="br0">&#40;</span>b<span class="sy2">++</span><span class="br0">&#41;</span><span class="br0">&#41;</span></span></span>
</p><p>Operator precedence is unaffected by <a href="operators.html" title="cpp/language/operators">operator overloading</a>.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/language/operator_precedence&amp;action=edit&amp;section=1" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<p>Precedence and associativity are compile-time concepts and are independent from <a href="eval_order.html" title="cpp/language/eval order">order of evaluation</a>, which is a runtime concept.
</p><p>The standard itself doesn't specify precedence levels. They are derived from the grammar.
</p><p><a href="const_cast.html" title="cpp/language/const cast"><tt>const_cast</tt></a>, <a href="static_cast.html" title="cpp/language/static cast"><tt>static_cast</tt></a>, <a href="dynamic_cast.html" title="cpp/language/dynamic cast"><tt>dynamic_cast</tt></a>, <a href="reinterpret_cast.html" title="cpp/language/reinterpret cast"><tt>reinterpret_cast</tt></a>, <a href="typeid.html" title="cpp/language/typeid"><tt>typeid</tt></a>, <a href="sizeof....html" title="cpp/language/sizeof..."><tt>sizeof...</tt></a>, <a href="noexcept.html" title="cpp/language/noexcept"><tt>noexcept</tt></a> and <a href="alignof.html" title="cpp/language/alignof"><tt>alignof</tt></a> are not included since they are never ambiguous.
</p><p>Some of the operators have <a href="operator_alternative.html" title="cpp/language/operator alternative">alternate spellings</a> (e.g., <span class="t-c"><span class="mw-geshi cpp source-cpp">and</span></span> for <code>&amp;&amp;</code>, <span class="t-c"><span class="mw-geshi cpp source-cpp">or</span></span> for <code>||</code>, <span class="t-c"><span class="mw-geshi cpp source-cpp">not</span></span> for <code>!</code>, etc.).
</p><p>Relative precedence of the ternary conditional and assignment operators differs between C and C++: in C, assignment is not allowed on the right-hand side of a ternary conditional operator, so <span class="t-c"><span class="mw-geshi cpp source-cpp">e <span class="sy1">=</span> a <span class="sy1">&lt;</span> d <span class="sy4">?</span> a<span class="sy2">++</span> <span class="sy4">:</span> a <span class="sy1">=</span> d</span></span> cannot be parsed. Many C compilers use a modified grammar where <code>?:</code> has higher precedence than <code>=</code>, which parses that as <span class="t-c"><span class="mw-geshi cpp source-cpp">e <span class="sy1">=</span> <span class="br0">&#40;</span> <span class="br0">&#40;</span><span class="br0">&#40;</span>a <span class="sy1">&lt;</span> d<span class="br0">&#41;</span> <span class="sy4">?</span> <span class="br0">&#40;</span>a<span class="sy2">++</span><span class="br0">&#41;</span> <span class="sy4">:</span> a<span class="br0">&#41;</span> <span class="sy1">=</span> d <span class="br0">&#41;</span></span></span> (which then fails to compile because <code>?:</code> is never lvalue in C and <code>=</code> requires lvalue on the left). In C++, <code>?:</code> and <code>=</code> have equal precedence and group right-to-left, so that <span class="t-c"><span class="mw-geshi cpp source-cpp">e <span class="sy1">=</span> a <span class="sy1">&lt;</span> d <span class="sy4">?</span> a<span class="sy2">++</span> <span class="sy4">:</span> a <span class="sy1">=</span> d</span></span> parses as <span class="t-c"><span class="mw-geshi cpp source-cpp">e <span class="sy1">=</span> <span class="br0">&#40;</span><span class="br0">&#40;</span>a <span class="sy1">&lt;</span> d<span class="br0">&#41;</span> <span class="sy4">?</span> <span class="br0">&#40;</span>a<span class="sy2">++</span><span class="br0">&#41;</span> <span class="sy4">:</span> <span class="br0">&#40;</span>a <span class="sy1">=</span> d<span class="br0">&#41;</span><span class="br0">&#41;</span></span></span>.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/language/operator_precedence&amp;action=edit&amp;section=2" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span></h3>
<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="cpp/language/operator assignment"> assignment</a>
</td>
<td> <a href="operator_incdec.html" title="cpp/language/operator incdec"> increment<br />decrement</a>
</td>
<td> <a href="operator_arithmetic.html" title="cpp/language/operator arithmetic"> arithmetic</a>
</td>
<td> <a href="operator_logical.html" title="cpp/language/operator logical"> logical</a>
</td>
<td> <a href="operator_comparison.html" title="cpp/language/operator comparison"> comparison</a>
</td>
<td> <a href="operator_member_access.html" title="cpp/language/operator member access"> member<br />access</a>
</td>
<td> <a href="operator_other.html" title="cpp/language/operator other"> other</a>
</td></tr>
<tr style="text-align:center">
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp">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">&amp;</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">&lt;&lt;=</span> b<br />
a <span class="sy1">&gt;&gt;=</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><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 cpp source-cpp"><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">&amp;</span> b<br />
a <span class="sy3">|</span> b<br />
a <span class="sy3">^</span> b<br />
a <span class="sy1">&lt;&lt;</span> b<br />
a <span class="sy1">&gt;&gt;</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy3">!</span>a<br />
a <span class="sy3">&amp;&amp;</span> b<br />
a <span class="sy3">||</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp">a <span class="sy1">==</span> b<br />
a <span class="sy3">!</span><span class="sy1">=</span> b<br />
a <span class="sy1">&lt;</span> b<br />
a <span class="sy1">&gt;</span> b<br />
a <span class="sy1">&lt;=</span> b<br />
a <span class="sy1">&gt;=</span> b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp">a<span class="br0">&#91;</span>b<span class="br0">&#93;</span><br />
<span class="sy2">*</span>a<br />
<span class="sy3">&amp;</span>a<br />
a<span class="sy2">-</span><span class="sy1">&gt;</span>b<br />
a.<span class="me1">b</span><br />
a<span class="sy2">-</span><span class="sy1">&gt;</span><span class="sy2">*</span>b<br />
a.<span class="sy2">*</span>b</span></span>
</p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp">a<span class="br0">&#40;</span>...<span class="br0">&#41;</span><br />
a, b<br />
<span class="sy4">?</span> <span class="sy4">:</span></span></span>
</p>
</td></tr>
<tr>
<th colspan="7"> Special operators
</th></tr>
<tr>
<td colspan="7">
<p><a href="static_cast.html" title="cpp/language/static cast"><tt>static_cast</tt></a> converts one type to another related type <br />
<a href="dynamic_cast.html" title="cpp/language/dynamic cast"><tt>dynamic_cast</tt></a> converts within inheritance hierarchies <br />
<a href="const_cast.html" title="cpp/language/const cast"><tt>const_cast</tt></a> adds or removes <a href="cv.html" title="cpp/language/cv">cv</a> qualifiers<br />
<a href="reinterpret_cast.html" title="cpp/language/reinterpret cast"><tt>reinterpret_cast</tt></a> converts type to unrelated type<br />
<a href="explicit_cast.html" title="cpp/language/explicit cast">C-style cast</a> converts one type to another by a mix of <code>static_cast</code>, <code>const_cast</code>, and <code>reinterpret_cast</code> <br />
<a href="../memory/new/operator_new.html" title="cpp/memory/new/operator new"><tt>new</tt></a> allocates memory<br />
<a href="../memory/new/operator_delete.html" title="cpp/memory/new/operator delete"><tt>delete</tt></a> deallocates memory<br />
<a href="sizeof.html" title="cpp/language/sizeof"><tt>sizeof</tt></a> queries the size of a type<br />
<a href="sizeof....html" title="cpp/language/sizeof..."><tt>sizeof...</tt></a> queries the size of a <a href="parameter_pack.html" title="cpp/language/parameter pack">parameter pack</a> <span class="t-mark-rev t-since-cxx11">(since C++11)</span><br />
<a href="typeid.html" title="cpp/language/typeid"><tt>typeid</tt></a> queries the type information of a type<br />
<a href="noexcept.html" title="cpp/language/noexcept"><tt>noexcept</tt></a> checks if an expression can throw an exception <span class="t-mark-rev t-since-cxx11">(since C++11)</span><br />
<a href="alignof.html" title="cpp/language/alignof"><tt>alignof</tt></a> queries alignment requirements of a type <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</p>
</td></tr></table>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../c/language/operator_precedence.html" title="c/language/operator precedence">C documentation</a></span> for <span class="t-dsc-see-tt"><span>C operator precedence</span></span></div>
</td></tr>

</table>

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