您要查找的是不是：
- character constant expression 符号常数表示式
- Is a constant expression that can reference variables. 是可以引用变量的常量表达式。
- Is due to its syntax expected to be a constant expression. 被当成了一个常量表达式。
- Enclosing a character constant in single quotation marks is recommended. 建议用单引号括住字符常量。
- For example, the initializer of an enumerator must be a constant expression. 例如，枚举成员的初始化式必须是常量表达式。
- Enclosing a character constant in double quotation marks is sometimes not allowed when the QUOTED IDENTIFIER option is set to ON. 当QUOTED IDENTIFIER选项设为ON时,有时不允许用双引号括住字符常量。
- Any constant or constant expression that evaluates to the data type of the parameter. 任何计算为参数数据类型的常数或常数表达式。
- Provided the value of the constant expression is within the range of the destination type. 前提是常数表达式的值处于目标类型的范围之内。
- A constant expression is an expression that can be fully evaluated at compile time. 常数表达式是在编译时可被完全计算的表达式。
- In a checked context, a compile-time error occurs if the operation is a constant expression. 在所检查的上下文中,如果该运算是常数表达式,则发生编译时错误。
- The absorption rate constant expresses the speed of absorption. 吸收速率常数表示吸收的速度。
- Generally speaking, a constant expression is an expression that the compiler can evaluate at compile-time. 一般来说，常量表达式是编译器在编译时就能够计算出结果的表达式。
- When using single quotation marks to delimit a character constant that contains an embedded single quotation mark, use two single quotation marks to represent the embedded single quotation mark. 如果使用单引号分隔的字符常量包含一个嵌入的单引号,可以使用两个单引号表示嵌入单引号。
- Name of the variable to assign the value. Any constant expression is allowed for this attribute, not only literals. 变量将要使用的变量名。允许使用任何常量表达式而不只是文本值。
- A constant expression must yield a value of the target type, or of a type that can be implicitly converted to the target type. 常数表达式必须产生具有目标类型或者可隐式转换为目标类型的类型的值。
- Statement might not accept the data type you want to assign, or you might not be able to compute the value at compile time with a constant expression. 语句可能不接受要赋给它的数据类型,或者在编译时可能无法使用常数表达式计算值。
- The code calls this version of the Write method to write individual character constants to the page. 该代码调用此版本的Write方法将单独的字符常数写入该页。
- Character constants must be enclosed in single quotation marks (') or double quotation marks ("). 字符常量必须包括在单引号(')或双引号(")中。
- We may supply an initial value for one or more enumerators. The value used to initialize an enumerator must be a constant expression . 可以为一个或多个枚举成员提供初始值，用来初始化枚举成员的值必须是一个常量表达式。
- As a consequence an enumerator is itself a constant expression and so can be used where a constant expression is required. 枚举成员本身就是一个常量表达式，所以也可用于需要常量表达式的任何地方。
