所有的二元操作符，除了。点和左括号和左方括号应用空格将其与操作数隔开。
All binary operators except. period and left parenthesis and left bracket should be separated from their operands by a space.
操作符的结合性定义了相同优先级操作符组合的顺序(从右至左或从左至右)。
The associativity of an operator defines the order in which operators of the same precedence are grouped (right-to-left or left-to-right).
尤其是，这些操作符返回左操作数作为运算结果。
In particular, the operators return their left-hand operand as their result.
如果一个类型说明符紧跟一个左括号，括号，是一个功能描述符和类型是一个函数的参数部分的开始。
If a type specifier immediately follows a left parenthesis, that parenthesis is the start of a function descriptor and the type is part of a function parameter.
由于输入操作符返回其左操作数，我们可以将输入请求序列合并成单个语句。
Because the operator returns its left-hand operand, we can combine a sequence of input requests into a single statement.
所有的赋值运算符都返回赋给左操作数的值。
All assignment operators return the value that is assigned to the left operand.
另一方面，算术操作符为左结合。表达式。
The arithmetic operators, on the other hand, are left associative. The expression.
有些操作符，比如赋值，要求其中的一个操作数必须是左值。
Some operators, such as assignment, require that one of their operands be an lvalue.
点操作符通过它的左操作数取得右操作数。
The dot operator fetches its right-hand operand from its left.
与下标和解引用操作符一样，赋值操作也返回左值。
Like the subscript and dereference operators, assignment returns an lvalue.
点操作符仅应用于类类型的对象：左操作数必须是类类型的对象，右操作数必须指定该类型的成员。
The dot operator applies only to objects of class type: the left-hand operand must be an object of class type; the right-hand operand must name a member of that type.
注意，本例子中的代码包含一个页首和页左栏，且以为开始标记符指定了正文区域但无结束标记符。
Notice that the example code contains a page header and a left gutter. It also specifies the content area by opening the tag but not closing it.
注意，本例子中的代码包含一个页首和页左栏，且以为开始标记符指定了正文区域但无结束标记符。
Notice that the example code contains a page header and a left gutter. It also specifies the content area by opening the tag but not closing it.
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