c++ - 将 char 数组转换为 unsigned char*

Question

有没有办法将 char[] 转换为 unsigned char*？

char buf[50] = "this is a test"; 
unsigned char* conbuf = // what should I add here

Answer 1

尽管从技术上讲它可能不是 100% 合法的，但这会起作用 reinterpret_cast<unsigned char*>(buf) .

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这在技术上不是 100% 合法的原因是第 5.2.10 节 expr.reinterpret.cast项目符号 7。

A pointer to an object can be explicitly converted to a pointer to an object of a different type. original type yields the original pointer value, the result of such a pointer conversion is unspecified.

我的意思是*reinterpret_cast<unsigned char*>(buf) = 'a'未指定但 *reinterpret_cast<char*>(reinterpret_cast<unsigned char*>(buf)) = 'a'没问题。