C中的无符号十六进制常量? [英] Unsigned hexadecimal constant in C?

问题描述

C 是否处理十六进制常量(例如 0x23FE)和有符号或无符号整数?

Does C treat hexadecimal constants (e.g. 0x23FE) and signed or unsigned int?

推荐答案

数字本身总是被解释为非负数.十六进制常量没有符号或任何固有的方式来表示负数.常量的类型是其中第一个可以表示其值的类型:

The number itself is always interpreted as a non-negative number. Hexadecimal constants don't have a sign or any inherent way to express a negative number. The type of the constant is the first one of these which can represent their value:

int
unsigned int
long int
unsigned long int
long long int
unsigned long long int

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