Literals include strings and character and numeric literals.
文字量包括字符串，字符和数字文字量。
Note that numeric literals do not include a sign; a phrase like -1 is actually an expression composed of the operator - and the literal 1.
注意数值型的字面值不包括符号(译注：正负号)，像-1实际上是个组合了一元运算符“-”和字面值1的表达式。
Note that numeric literals do not include a sign; a phrase like -1 is actually an expression composed of the unary operator '-' and the literal 1.
注意数值型的字面值不包括符号(译注：正负号)，像-1实际上是个组合了一元运算符“-”和字面值1的表达式。
Variables are lvalues and so may appear on the left-hand side of an assignment. Numeric literals are rvalues and so may not be assigned. Given the variables.
变量是左值，因此可以出现在赋值语句的左边。数字字面值是右值，因此不能被赋值。给定以下变量。
When you have an easy way to express numeric literals, especially in hexadecimal, you can easily build flags that correspond to specific test cases, which is a common programming trick.
当您具有容易的方式来表达数值常量时，尤其是十六进制，就可以容易地构建对应于特定测试用例的标志，这是一种常见的编程技术。
Two other important points related to the numeric types are literals, which are just explicitly expressed Numbers, like 100 in the previous examples, and bit operations.
与数值类型相关的其他两个重点是常量(如上例中的100，只是明确表达的数字)和位运算。
Now that we know the basic numeric types, we need to understand how are literals of.
现在我们知道了基础的数字种类，我们需要明白每一种是如何区分的。
Now that we know the basic numeric types, we need to understand how are literals of.
现在我们知道了基础的数字种类，我们需要明白每一种是如何区分的。
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