In c programming have 256 charcters, the enire characters are divide into two parts ASCII character set and ESCAPE Sequence.
The /n /t /a /r are the ESCAPE sequence in c there uses are folows
/n : is used to print the output in new line
/t : is used to give one horizontal tab in desired output
/a : is used to ALARM or BEEP
/r : is used to Carriage Return