C++ Without Fear: A Beginner’s Guide That Makes You Feel Smart, Second Edition

E. ASCII Codes

This appendix presents ASCII codes according to decimal value, hexadecimal value, and corresponding character. Hexadecimal codes can be used to embed values into a string. You can also print characters by using a (char) cast. For example:

cout << "Hex code 7e is " << "\x7e" << endl;// Print ASCII codes from 32 to 42.for (int i = 32; i <= 42; i++)    cout << i << ": " << (char) i << endl;

Some nonprintable characters have special meanings:

• NUL: null value

• ACK: acknowledgment signal (used in network communications)

• BEL: bell

• BS: backspace

• LF: linefeed

• FF: form feed (new page)

• CR: carriage return

• NAK: no acknowledgment

• DEL: delete

Table E.1 gives the standard ASCII codes.

Table E.1. Standard ASCII Codes

Table E.2 ...