#2 Tokens of C

➤ Escape sequence

• C supports the combinations of backslash ( \ ) and some characters from the C character for representing these characters in our C programs.
• These combinations are known as escape sequence and are represented by two characters.
• The first character is "\" and second character is from the C character set.

Some escape sequence are:-

1.     \b = backspace
2.     \a = alert
3.     \r = carriage return
4.     \n = newline
5.     \f = form feed
6.     \0 = null character
7.     \v = vertical tab
8.     \t = horizontal tab
9.     \\ = backslash

➤ Keywords/Reserved words

• There are certain words that are reserved for doing specific tasks. They are known as keywords.
• They have standards and predefined meaning in C.
• They are always written in lowercase.
• There are only 32 keywords available in C.

All 32 keywords are:-

1. auto
2. break
3. case
4. char
5. const
6. continue
7. default
8. do
9. double
10. else
11. enum
12. extern
13. float
14. for
15. goto
16. if
17. int
18. long
19. register
20. return
21. short
22. signed
23. sizeof
24. static
25. struct
26. switch
27. typedef
28. union
29. unsigned
30. void
31. volatile
32. while