What does the /b /r /t /a do in c programming

Answer 1

They are special characters.
They exist because escape characters don't have own character, there is no 1 character representatikns for characters, such as newlines and tabs, so they are represented as backslash \ followed by a character.

\b represents a backspace
\r represents a carriage return
\t represents a tab
\a represenst a bell.

I don't actually know what carriage return and bell does, but tab often represents 4 spaces and \b represents backspace (hides previous character).

printf("hello\tworld!"); #hello world!
printf("hello\bworld!"); #hellworld!

Answer 2

thanks