Keywords and Escape Characters in C
- Keywords are the system defined identifiers.
- All keywords have fixed meanings that do not change.
- White spaces are not allowed in keywords.
- The keyword may not be used as a user-defined identifier.
- It is strongly recommended that keywords should be in lower case letters.
- There are totally 32 keywords used in a C programming.
int, float, double, long, short, signed, unsigned, const, if, else, switch, break, default, do, while, for, register, extern, static, struct, typedef, enum, return, sizeof, goto, union, auto, case, void, char, continue, volatile
- Escape Sequence Characters (Backslash Character Constants) in C:
- C supports some special escape sequence characters that are used to do special tasks.
- Some of the escape sequence characters are as follows:
Character Constant Meaning
\n New line (Line break)
\t Horizontal Tab
\f Form feed
\a Alert (alerts a bell)
\r Carriage Return
\v Vertical Tab
\? Question Mark
\’ Single Quote
\” Double Quote
Example codes on escape sequences: