C Keywords

The C Keywords must be in your information because you can not use them as a variable name.

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.

C Keywords List

A list of 32 reserved keywords in c language is given below:

autodoubleintstruct
breakelselongswitch
caseenumregistertypedef
charexternreturnunion
constfloatshortunsigned
continueforsignedvoid
defaultgotosizeofvolatile
doifstaticwhile

Example Where and How Keywords are Used in the Program

Example:
#include<stdio.h>

main()
{
float a, b;
printf("Showing how keywords are used.");
return 0;
}

In the above program, float and return are keywords. The float is used to declare variables, and return is used to return an integer type value in this program.


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