C # escape characters,

C # escape characters,

All ASCII codes can be represented by "\" and numbers (generally Octal numbers. C defines some common ASCII characters that cannot be displayed, such as \ 0, \ t, \ n, which are called escape characters, because the subsequent characters do not mean their original ASCII characters.

 

All escape characters and their meanings:

Escape characters	Meaning	ASCII value (decimal)
\	Bell (BEL)	007
\ B	Return to BS to move the current position to the previous column.	008
\ F	Change page (FF), move the current position to the beginning of the next page	012
\ N	Line feed (LF), move the current position to the beginning of the next line	010
\ R	Press enter (CR) to move the current position to the beginning of the line	013
\ T	Horizontal tabulation (HT) (jump to the next TAB)	009
\ V	Vertical tabulation (VT)	011
\\	Represents a backslash character ''\'	092
\'	Represents a single quotation mark (apostrophes) character	039
\"	Represents a double quotation mark character	034
\ 0	NULL)	000
\ Ddd	Any character from 1 to 3 octal digits	Three octal nodes
\ Xhh	Any character in hexadecimal notation between 1 and 2	Two hexadecimal

Note: Yes. slashes: "/" and backslash: "\" are not interchangeable here.

Constant

Constant represents the value that can be contained in a variable. We can use an ASCII expression to represent a constant of the escape type, or use a backslash to represent escape characters in single quotes.

'A', '\ x2f',' \ 013 ';

Where: \ x indicates that the subsequent characters are hexadecimal numbers, and \ 0 indicates that the subsequent characters are Octal numbers.

Note: In Turbo C 2.0, the number range of the constant type is-128 to 127, unless you declare it as unsigned, so that it is 0 to 255.

The \ x, \ n, \ a, and so on we have seen above are all called escape characters, which tell the compiler to use special methods for processing.