C Tutor... C Tutorial....: What is Escape sequence & its purpose & characteristics in C

What is Escape sequence & its purpose & characteristics in C

• The escape sequence characters are also called as backslash character constants.
• These are used for formatting the output.
• The escape sequence characters are as follows :

\a audible bell
\b back space
\f form feed
\n new line
\r carriage return
\t horizontal tab
\v vertical tab
\\ back slash
\0 null character
\’ single quote
\” double quote
\000 octar number
\xhh hexadecimal number

Characteristics

1) Although it consists of two characters, it represents single character.
2) Every combination starts with back slash(\)
3) They are non-printing characters.
4) It can also be expressed in terms of octal digits or hexadecimal sequence.
5) Each escape sequence has unique ASCII value.
6) Escape sequence in character constants and string literals are replaced by their equivalent and then adjacent string literals are concatenated.

History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.