c++ - "unsigned int"是否被视为一种数据类型？

Question

如果我有:

unsigned int i;

unsigned int 本身是否被视为一种数据类型，就像 int 或 float 是一种数据类型一样？或者我们只是说 int 是数据类型，而 unsigned 只是修改数据类型的工作方式？

Answer 1

C++ 标准 §3.9.1，第 2-3 段:(C 类似)

2. There are five standard signed integer types : “signed char”, “short int”, “int”, “long int”, and “long long int”…
3. For each of the standard signed integer types, there exists a corresponding (but different) standard unsigned integer type: “unsigned char”, “unsigned short int”, “unsigned int”, “unsigned long int”, and “unsigned long long int”…