在C＃中可以将一个Char转换为Int32产生负值吗？

Question

或者它是否始终保证对所有可能的Chars都是正面的？

Answer 1

It's guaranteed to be non-negative.

char is an unsigned 16-bit value.

From section 4.1.5 of the C# 4 spec:

The char type represents unsigned 16-bit integers with values between 0 and 65535. The set of possible values for the char type corresponds to the Unicode character set. Although char has the same representation as ushort , not all operations permitted on one type are permitted on the other.

Answer 2

由于char的范围是U + 0000到U + ffff，因此对Int32将始终为正。

Answer 3

Each 16-bit value ranges from hexadecimal 0x0000 through 0xFFFF and is stored in a Char structure.

Char Structure - MSDN

Answer 4

See Microsoft's documentation

There you can see, that Char is a 16 bit value in the range of U+0000 to U+ffff. If you cast it to a Int32, there should be no negative value.

Answer 5

char可以明确地转换为ushort ， ushort范围是0 to 65,535所以它总是正面的