2024年8月5日 · In the most common extended 8-bit ASCII tables 255 is the 'ÿ' symbol (Latin small letter y with diaeresis). The space character is decimal value 32. So what you are searching for is probably: cout << char(32);

2014年10月5日 · Extended ASCII is an 8-bit character set. (Original ASCII is 7-bit, but that's not relevant here.) 8 bit means that 2^8 different characters can be referenced. 2^8 equals 256, and as counting starts with 0, the maximum ASCII char code has the value 255. Thus, the statement: The maximum number of characters is 255. is wrong, it should read:

2015年11月5日 · I was always under the assumption ASCII codes ranged from 0 to 255. Last night I had to deal with a character that I thought was an underscore but turned out to be Chr(8230). Three little dots resembling an underscore. This was in an AutoHotKey script. Problem solved but it left me with questions. I found a table with Chr(8230) and more.

2016年11月2日 · The i values (0-255) would be from the ISO-8859-1 character set. (The question asker declined to identify which "extended ASCII" [vague term] was wanted, except by accepting this answer.) (The question asker declined to identify which "extended ASCII" [vague term] was wanted, except by accepting this answer.)

2018年9月21日 · The chr(255) in your concatenated string is treated as null, which has no length, so only the other non-null characters are counted - hence it gets 2 rather than 4. ASCII doesn't really go up to 255, and you aren't really dealing with ASCII. Your database character set is (presumably) AL32UTF8, which is a multibyte character set.

2023年7月25日 · Microsoft and ASCII Extension: Code Pages. During the DOS era, Before Unicode launched in 1991, Microsoft came up with what is known as Code Pages. Unlike what seems to be a quite popular belief, "Extended ASCII" is not an extension for the ASCII table, but a FAMILLY of extensions for the ASCII table. Code Pages are ASCII extensions, and so is ...

2015年8月23日 · The chr function converts integers between 0 and 127 into the ASCII characters. E.g. >>> chr(65) 'A' I get how this is useful in certain situations and I understand why it covers 0..127, the 7-bit ASCII range. The function also takes arguments from 128..255. For these numbers, it simply returns the hexadecimal representation of the argument.

2015年2月12日 · However, I presume that what you're describing is some kind of stream of bytes containing ASCII characters and delimited by byte 255's (0xff in hexadecimal). Once you've got the data into a string, the individual characters are represented in UTF-16; a multi-byte format that can accommodate the full Unicode character set.

2011年2月13日 · ASCII is a very common standard and it is based on a 7-bit "byte" (in the former sense). Many computers supported ASCII, hence many computers used/supported 7 bit "bytes". Before ASCII, punched card characters were usually represented as 6 bit bytes. –

2013年11月6日 · Maximum unsigned numbers that can be represented using 8bits = 1byte is 255 (0 to (2pow(8-1))-1) i.e 0 to 255. i.e from . 0000 0000 to. 1111 1111 When you try to print 257 in binary (1 0000 0001) using %c, it will see only 1 byte i.e 0000 0001. Corresponding character for 0000 0001 is printed.