Keywords in C
Keywords, C Keywords List, Differentiate between Keywords words and identifiers
Gaurav Kr. suman 22/04/2020 MAT03
Keywords have fixed meanings, and the meaning cannot be changed. They act as a
building block of a 'C' program. There are total 32 keywords in 'C'. Keywords are
written in lowercase letters.
You can't use a keyword as an identifier in your C programs, its reserved words in C
library and used to perform an internal operation. The meaning and working of these
keywords are already known to the compiler.
A list of 32 reserved keywords in c language is given below:
auto double int struct
break else long switch
case enum register typedef
char extern return union
const float short unsigned
continue for signed void
default goto sizeof volatile
do if static while
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Identifier Keyword
User-defined word Predefined
word
Can written in lowercase and Must be written in lowercase only
uppercase
Must be meaningful in the Has fixed meaning
program
Whose meaning not explained to Whose meaning has already been explained to the C compiler
the C compiler
Combination of alphanumeric Combination of alphabetic characters
characters
Used for required purpose Used only for it intended purpose
Underscore character is Underscore character is not considered as a letter
considered as a letter
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