How many keywords does the C99 standard version of the C programming language include?

The C99 standard of the C programming language includes a total of 32 keywords. These keywords serve specific functions and are part of the syntax of C, defining the structure and operations that can be performed within the language. The keywords in C99 include, but are not limited to, auto, break, case, char, const, continue, default, do, double, else, enum, extern, float, for, goto, if, inline, int, long, register, restrict, return, short, signed, sizeof, static, struct, switch, typedef, union, unsigned, void, volatile, and while.

Each keyword has a specific meaning and plays a crucial role in the structuring of programs in C. Knowing these keywords is essential for anyone programming in C, as they form the basic building blocks of the language.