14. Remember the C keywords

In C language the ANSI Chas 32 keywords that may not be used as variable or function names. These words, combined with the formal C syntax, form the C programming language. They are listed in this table.

Many C compilers have added several additional keywords that are used to take better advantage of the environment in which the compiler is used, and that give support for inter-language programming, interrupts, and memory organization. Some commonly used extended keywords are show in the table.

   The lowercase lettering of the keywords in significant. C requires that all keywords be in lowercase form. For example RETURN will not be recognized as the keyword return. Also, no keyword may be used as a variable or function name.

(post by arnob)