Escape Sequences in C

Escape Sequences in C

·       Certain ASCII characters are unprintable , which means they are not displayed on the  screen or printer .

·       Those characters perform other functions aside from displaying text.

·       Examples are :

·       Backspacing , moving to a new line , or ringing a bell.

We have already  seen about  \n  in our previous post on topic "My first C program "

Link to that post :https://iamafutureprogrammer.blogspot.com/2019/05/my-first-c-program.html

·       Escape sequence usually consist of a backslash and a letter or a combination of digits.

·       To represent the creation of  non printing characters such as newline character, single quotation mark , or certain other characters such as  “ , ‘ , ? and \ escape sequences can be used.

·       An escape sequence is regarded as  single character and is therefore valid as a character constant.

·       Escape sequences are typically used to specify actions such as carriage return and tab movement on terminals and printers.

·       The commonly used escape sequences are shown below.

Escape Sequences	Represents	ASCII value
\a	Bell(alert)	007
\b	Backspace	008
\f	Form feed	012
\n	New line	010
\r	Carriage return	013
\t	Horizontal tab	009
\v	Vertical tab	011
\’	Single quotation mark	039
\”	Double quotation mark	034
\?	Literal quotation mark	063
\\	Backslash	092
\0	Null	000

If a backslash precedes a character that does not appears in the above table , the compiler handles the undefined characters as the character itself and thus the result may be unpredictable.

Thank You ….