Search results
Results from the WOW.Com Content Network
Only a small subset of possible byte strings are error-free UTF-8: several bytes cannot appear; a byte with the high bit set cannot be alone; and in a truly random string a byte with a high bit set has only a 1 ⁄ 15 chance of starting a valid UTF-8 character. This has the (possibly unintended) consequence of making it easy to detect if a ...
Legacy programs can generally handle UTF-8 encoded files, even if they contain non-ASCII characters. For instance, the C printf function can print a UTF-8 string because it only looks for the ASCII '%' character to define a formatting string. All other bytes are printed unchanged.
Start of String SOS U+0099 153 0302 0231: Single Graphic Character Introducer SGCI U+009A 154 0302 0232: Single Character Intro Introducer SCI U+009B 155 0302 0233: Control Sequence Introducer: CSI U+009C 156 0302 0234: String Terminator ST U+009D 157 0302 0235: Operating System Command OSC U+009E 158 0302 0236: Private Message PM U+009F 159 ...
The same character converted to UTF-8 becomes the byte sequence EF BB BF. The Unicode Standard allows the BOM "can serve as a signature for UTF-8 encoded text where the character set is unmarked". [74] Some software developers have adopted it for other encodings, including UTF-8, in an attempt to distinguish UTF-8 from local 8-bit code pages.
[8] [9] [10] However, it is common to store the subset of ASCII or UTF-8 – every character except NUL – in null-terminated strings. Some systems use "modified UTF-8" which encodes NUL as two non-zero bytes (0xC0, 0x80) and thus allow all possible strings to be stored. This is not allowed by the UTF-8 standard, because it is an overlong ...
[a] This allows for calling "narrow" functions, including fopen and SetWindowTextA, with UTF-8 strings. However this is a system-wide setting and a program cannot assume it is set. In May 2019, Microsoft added the ability for a program to set the code page to UTF-8 itself, [1] [14] allowing programs written to use UTF-8 to be run by non-expert ...
For example, the null character (U+0000 NULL) is used in C-programming application environments to indicate the end of a string of characters. In this way, these programs only require a single starting memory address for a string (as opposed to a starting address and a length), since the string ends once the program reads the null character.
The Universal Coded Character Set (UCS, Unicode) is a standard set of characters defined by the international standard ISO/IEC 10646, Information technology — Universal Coded Character Set (UCS) (plus amendments to that standard), which is the basis of many character encodings, improving as characters from previously unrepresented typing systems are added.