Appendix C. THE ASCII CHARACTER SET
Computers store characters using a numeric code. The ASCII code (American Standard Code for Information Interchange) is the most commonly used code in the United States. C++ lets you represent most single characters directly, by including the character in single quotation marks, as in `A' for the A character. You can also represent a single character by using the octal or hex code preceded by a backslash; for example, `\012' and `\0xa' both represent the linefeed (LF) character. Such escape sequences can also be part of a string, as in "Hello,\012my dear".
When used as a prefix in the following table, the ^ character denotes using a Ctrl key.
| Decimal | Octal | Hex | Binary | Character | ASCII Name |
|---|---|---|---|---|---|
| 0 | 0 | 0 | 00000000 | ^@ | NUL |
| 1 | 01 | 0×1 | 00000001 ... |
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