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:
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 |
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.
Keywords in C - Video Tutorial
To understand C Keywords in more depth, please watch this video tutorial.