C++ Operator Precedence

 

C++

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入力/出力ライブラリ

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正規表現ライブラリ (C++11)

アトミック操作ライブラリ (C++11)

スレッドのサポートライブラリ (C++11)

 

C++言語

一般的なトピック Original: General topics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
プリプロセッサ コメント キーワード	ASCIIチャート エスケープシーケンスを の歴史、C + +
フロー制御 Original: Flow control The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
条件付き実行文 Original: Conditional execution statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
if statement	switch statement
繰り返し文 Original: Iteration statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
for loop range-for loop (C++11)	while loop do-while loop
文をジャンプします Original: Jump statements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
continue statement break statement	goto statement return statement
機能します Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
関数の宣言
ラムダ関数の宣言
関数テンプレート
の歴史。インライン指定
例外仕様 (廃止予定)
noexcept指定子 (C++11)
例外 Original: Exceptions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
式を投げる	try-catchブロック
名前空間 Original: Namespaces The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
名前空間の宣言	名前空間のエイリアス
タイプ Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
基本的なタイプ 複合型 列挙型	union型 関数型
decltype specifier (C++11)
指定子 Original: Specifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
CV指定
貯蔵期間指定
constexprの指定子 (C++11)
自動指定 (C++11)
alignas指定子 (C++11)
初期化 Original: Initialization The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
デフォルトの初期化 値の初期化 ゼロ初期化 初期設定をコピーします 直接初期化	集約の初期化 リストの初期化 (C++11) 定数の初期化 リファレンスの初期化

リテラル Original: Literals The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
整数リテラル 文字リテラル 浮動小数点リテラル 文字列リテラル	ブールリテラル nullptrを (C++11) ユーザーが定義します (C++11)
式 Original: Expressions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
値カテゴリ 評価の順序	演算子 演算子の優先順位
代替表現
ユーティリティ Original: Utilities The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
タイプ Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
typedef declaration
型の別名宣言 (C++11)
属性 (C++11)
キャストします Original: Casts The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
暗黙の型変換
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
Cスタイルキャストと機能
メモリの割り当て Original: Memory allocation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
new expression	delete expression
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クラス宣言 this pointer 指定子にアクセスします	友人指定子 初期化リスト
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仮想関数 指定子をオーバーライドします (C++11) 最後の子 (C++11)	明示 (C++11) 静的
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デフォルトのコンストラクタです コンストラクタをコピーしてください コンストラクタに移動します (C++11)	割り当てをコピーしてください 割り当てを移動します (C++11) デストラクタです
テンプレート Original: Templates The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
クラステンプレート
関数テンプレート
テンプレートの特殊化
パラメーターパック (C++11)
その他 Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
インラインアセンブリ

 

次の表は、C + +演算子の優先順位と結合性を示しています。演算子は優先順位の降順で、上から下に記載されています.

Original:

The following table lists the precedence and associativity of C++ operators. Operators are listed top to bottom, in descending precedence.

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Precedence	Operator	Description	Associativity
1	::	Scope resolution	Left-to-right
2	++   --	Suffix/postfix increment and decrement
	()	Function call
	[]	Array subscripting
	.	Element selection by reference
	−>	Element selection through pointer
3	++   --	Prefix increment and decrement	Right-to-left
	+   −	Unary plus and minus
	!   ~	Logical NOT and bitwise NOT
	(type)	Type cast
	*	Indirection (dereference)
	&	Address-of
	sizeof	Size-of
	new, new[]	Dynamic memory allocation
	delete, delete[]	Dynamic memory deallocation
4	.*   ->*	Pointer to member	Left-to-right
5	*   /   %	Multiplication, division, and remainder
6	+   −	Addition and subtraction
7	<<   >>	Bitwise left shift and right shift
8	<   <=	For relational operators < and ≤ respectively
	>   >=	For relational operators > and ≥ respectively
9	==   !=	For relational = and ≠ respectively
10	&	Bitwise AND
11	^	Bitwise XOR (exclusive or)
12	|	Bitwise OR (inclusive or)
13	&&	Logical AND
14	||	Logical OR
15	?:	Ternary conditional	Right-to-left
	=	Direct assignment (provided by default for C++ classes)
	+=   −=	Assignment by sum and difference
	*=   /=   %=	Assignment by product, quotient, and remainder
	<<=   >>=	Assignment by bitwise left shift and right shift
	&=   ^=   |=	Assignment by bitwise AND, XOR, and OR
16	throw	Throw operator (for exceptions)
17	,	Comma	Left-to-right

式を解析する際には、いくつかの行に記載されている演算子は、その下にさらに行に上場されている任意の演算子よりも、その引数に（括弧であるかのように）緊密にバインドされます。たとえば、表現std::cout<<a&bと*p++(std::cout<<a)&bとして解析され、*(p++)はなく、std::cout<<(a&b)として、または(*p)++.

Original:

When parsing an expression, an operator which is listed on some row will be bound tighter (as if by parentheses) to its arguments than any operator that is listed on a row further below it. For example, the expressions std::cout<<a&b and *p++ are parsed as (std::cout<<a)&b and *(p++), and not as std::cout<<(a&b) or (*p)++.

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（セルに記載されている演算子のいくつかの行があるかもしれません）、同じセル内にある演算子は、指定された方向に、同じ優先順位で評価されます。例えば、発現a=b=cはa=(b=c)として解析されていないので右から左への結合性の(a=b)=cとされ.

Original:

Operators that are in the same cell (there may be several rows of operators listed in a cell) are evaluated with the same precedence, in the given direction. For example, the expression a=b=c is parsed as a=(b=c), and not as (a=b)=c because of right-to-left associativity.

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演算子の優先順位は、過負荷による影響を受けません.

Original:

An operator's precedence is unaffected by overloading.

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ノート

規格自体は優先レベルを指定していません。彼らは文法から派生してい.

Original:

The standard itself doesn't specify precedence levels. They are derived from the grammar.

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const_cast、static_cast、dynamic_cast、reinterpret_castとtypeid彼らは曖昧なことは決してありませんので、含まれていません.

Original:

const_cast, static_cast, dynamic_cast, reinterpret_cast and typeid are not included since they are never ambiguous.

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演算子の中には代替スペルを持っている（例えば、and&&ため、or||ため、not!用など）.

Original:

Some of the operators have 代替スペル (e.g., and for &&, or for ||, not for !, etc.).

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参照

実行時に演算子の引数の評価の順序.

Original:

評価の順序 of operator arguments at run time.

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Common operators
代入	incrementNJdecrement	算術	論理	比較	memberNJaccess	他の
a = b a = rvalue a += b a -= b a *= b a /= b a %= b a &= b a |= b a ^= b a <<= b a >>= b	++a --a a++ a--	+a -a a + b a - b a * b a / b a % b ~a a & b a | b a ^ b a << b a >> b	!a a && b a || b	a == b a != b a < b a > b a <= b a >= b	a[b] *a &a a->b a.b a->*b a.*b	a(...) a, b (type) a ? :
Special operators
static_cast別の互換性のあるタイプ に1型に変換します Original: static_cast converts one type to another compatible type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. dynamic_cast派生class に仮想基底クラスに変換します Original: dynamic_cast converts virtual base class to derived class The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. const_cast異なるcvqualifiers と互換性のある型に型変換されます Original: const_cast converts type to compatible type with different cv qualifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. reinterpret_cast互換性type に型を変換します Original: reinterpret_cast converts type to incompatible type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. new割り当てmemory Original: new allocates memory The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. delete割り当て解除memory Original: delete deallocates memory The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. sizeoftype のサイズを照会します Original: sizeof queries the size of a type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. sizeof...パラメーターパック(C++11およびそれ以降) のサイズを照会します Original: sizeof... queries the size of a パラメーターパック (C++11およびそれ以降) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. typeidtype の型情報を照会します Original: typeid queries the type information of a type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. noexcept式が例外(C++11およびそれ以降) を投げることができるかどうかをチェックします Original: noexcept checks if an expression can throw an exception (C++11およびそれ以降) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. alignofタイプ(C++11およびそれ以降)のクエリアラインメント要件を Original: alignof queries alignment requirements of a type (C++11およびそれ以降) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.