C Keywords

A keyword is a reserved word. We cannot use it as a variable name, constant name, etc. There are only 32 reserved words (keywords) in the C language.

All the 32 keywords have their meaning which is already known to the compiler.

Properties of Keywords

1. All the keywords in C programming language are defined as lowercase letters so they must be used only in lowercase letters
2. Every keyword has a specific meaning, users can not change that meaning.
3. Keywords can not be used as user-defined names like variable, functions, arrays, pointers, etc...
4. Every keyword in C programming language represents something or specifies some kind of action to be performed by the compiler.

The following table specifies all the 32 keywords.

All the keywords are in lowercase letters.