C++ is a powerful and helpful programming language. Both structured and object-oriented applications can be written in C++. Since C++ is a superset of C, most C constructs are valid in C++ and retain their meaning. There are several additions and exceptions, though.

Each group of letters separated by white space in a C++ program’s source code is referred to as a token by the compiler. The minor individual units in a program are tokens. Tokens are used while writing C++ programs. The following components are present:

• Keywords
• Identifiers
• Constants
• Strings
• Operators

Reserved words, usually referred to as keywords, are always written or typed in short (lowercase) and have specific meanings for the C++ compiler. Words like the void, int, public, etc., that the language employs for a particular function are examples of keywords. It cannot be used as the name of a variable or function. The table for the entire list of C++ keywords can be seen below.

How identifier differs from keywords and what it is:

Identifiers are the names given to the programmer-created variables, functions, arrays, classes, etc. They are a necessary condition for any language.

Identifier naming conventions:

A number or other unique character cannot begin the name of the identifier.

You cannot use a keyword as an identification name.

Only numbers underscore, and alphabetic letters are allowed.

There is a distinction between capital and lowercase letters. A and an are distinct in C++, for example.

GFG, gfg, and geeks for geeks are all acceptable identities.

How are keywords distinct from IDs at this point?

There are a few fundamental characteristics of keywords that set them apart from identifiers:

• While identifiers are the values used to construct various programming objects like variables, integers, structures, and unions, keywords are predefined or reserved words.
• While identifiers can also begin with a capital letter, keywords always start with a lowercase letter.
• Identification can include alphabetic characters, numbers, and underscores, but a keyword must only have alphabetical characters.
• Punctuation is used in keywords and identifiers; there is no particular symbol. An identification can only contain the underscore character.

Examples of IDs and keywords

• Keywords: while, do, int, char.
• Geeks-for-Geeks, GFG, and Gfg1 are identifiers.

Now that you know more about C++ Programming, here are the keywords:

1. alignas 
2. alignof 
3. and
4. and_eq
5. asm
6. atomic_cancel 
7. atomic_commit 
8. atomic_noexcept 
9. auto 
10. bitand
11. bitor
12. bool
13. break
14. case
15. catch
16. char
17. char8_t 
18. char16_t 
19. char32_t 
20. class 
21. compl
22. concept 
23. const
24. consteval
25. constexpr 
26. Content
27. const_cast
28. continue
29. co_await 
30. co_return
31. co_yield 
32. decltype 
33. default 
34. delete
35. do
36. double
37. dynamic_cast
38. else
39. enum
40. explicit
41. export 
42. extern 
43. false
44. float
45. for
46. friend
47. goto
48. if
49. inline
50. int
51. long
52. mutable 
53. namespace
54. new
55. noexcept
56. not
57. not_eq
58. nullptr 
59. operator
60. or
61. or_eq
62. private
63. protected
64. Public
65. ​​reflexpr 
66. register 
67. reinterpret_cast
68. requires 
69. return
70. short
71. signed
72. sizeof 
73. static
74. static_assert 
75. static_cast
76. struct 
77. switch
78. synchronized 
79. template
80. this 
81. thread_local 
82. throw
83. true
84. try
85. typedef
86. typeid
87. type name
88. union
89. unsigned
90. using 
91. virtual
92. void
93. volatile
94. wchar_t
95. while
96. xor
97. xor_eq