这些表达式的类型必须是32位整数。

Types for these expressions must be 32-bit integers.

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C+ +没有提供查询变量或表达式的类型的简便方法。

C + + has never had an easy mechanism for querying the type of a variable or an expression.

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函数表达式的类型取决于函数的性质及其参数的类型。

The functional expression's type depends on the nature of the function and type of its arguments.

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