Dollar sign: what changed
Revision 1 to 2. Removed lines have a minus sign; added lines have a plus sign.
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| 1 | - | ||
| 2 | - | ||
| 3 | 1 | \$ | |
| 4 | - | ||
| 5 | - | ||
| 6 | 2 | ||
| 7 | 3 | In [[ASCII]], the character code decimal `36` (or hexadecimal `24`) is defined to be `$` (dollar sign). | |
| 8 | 4 | ||
| 9 | 5 | ## Pascal | |
| 10 | 6 | ||
| 11 | 7 | As a [[PXSC]] extension, the symbol `$`, pronounced “dollar sign”, is used to indicate a [[Hexadecimal|hexadecimal]] base.\ | |
| 12 | 8 | ||
| 13 | 9 | ``` pascal | |
| 14 | 10 | program dollarSignDemo(input, output, stderr); | |
| 15 | 11 | ||
| 16 | 12 | var | |
| 17 | 13 | i: longint; | |
| 18 | 14 | ||
| 19 | 15 | begin | |
| 20 | 16 | // '$' as well as '0x' are recognized by readLn | |
| 21 | 17 | // as hexadecimal base prefixes | |
| 22 | 18 | readStr('$24', i); | |
| 23 | 19 | writeLn(i); // will print 36 | |
| 24 | 20 | writeLn(-$24); // will print -36 | |
| 25 | 21 | end. | |
| 26 | 22 | ``` | |
| 27 | 23 | ||
| 28 | 24 | An optional sign is written in front the base indicator. | |
| 29 | 25 | ||
| 30 | 26 | ## other appearances | |
| 31 | 27 | ||
| 32 | 28 | For [[FPC]] and [[Delphi]] [[Compiler|compilers]], the dollar sign appears in [[Compiler directive|compiler directives]] of the form `{$directive}`. | |
| 33 | 29 | ||
| 34 | 30 | --- | |
| 35 | 31 | *From the Free Pascal wiki, page "Dollar sign", as it stood on 2024-02-28 after a change by Alextp, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |