Keywords are predefined, reserved words used in programming that have special meanings to the compiler. It helps us to use the functionality of C language. We cannot use it as a variable name, constant name, etc. There are 32 reserved keywords in the C language.

** All keywords must be written in lowercase.

Table of 32 keywords in C

autodoubleintstruct
breakelselongswitch
caseenumregistertypedef
charexternreturnunion
continueforsignedvoid
doifstaticwhile
defaultgotosizeofvolatile
constfloatshortunsigned
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