UInt8: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: UInt8
| Old | New | Line | |
|---|---|---|---|
| 1 | + | Back to [[Data type|data types]]. | |
| 2 | + | ||
| 3 | + | Range of values: 0 .. 255 | |
| 4 | + | ||
| 5 | + | Memory requirement: 1 byte or 8 bit | |
| 6 | + | ||
| 7 | + | A [[Data field|data field]] of the **UInt8** data type can only contain positive integer values. | |
| 8 | + | ||
| 9 | + | Assigning other values leads to compiler error messages when the program is compiled and the compilation process is aborted. That is, the executable program is not created. | |
| 10 | + | ||
| 11 | + | Definition of a data field of type UInt8: | |
| 12 | + | ||
| 13 | + | ``` pascal | |
| 14 | + | var | |
| 15 | + | ui8 : uint8; | |
| 16 | + | ``` | |
| 17 | + | ||
| 18 | + | Examples of assigning valid values: | |
| 19 | + | ||
| 20 | + | ``` pascal | |
| 21 | + | ui8 := 0; | |
| 22 | + | ui8 := 255; | |
| 23 | + | ``` | |
| 24 | + | ||
| 25 | + | Examples of assigning invalid values: | |
| 26 | + | ||
| 27 | + | ``` pascal | |
| 28 | + | ui8 := '0'; | |
| 29 | + | ui8 := '255'; | |
| 30 | + | ``` | |
| 31 | + | ||
| 32 | + | The difference between the two examples is that the upper example is the assignment of literals of the type [[Integer]], while the assignment of the lower example is literals of the type [[String]]. | |
| 33 | + | ||
| 34 | + | --- | |
| 35 | + | *From the Free Pascal wiki, page "UInt8", as it stood on 2020-03-02 after a change by Trev, 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).* |