Keywords in C programming are reserved words that have a specific meaning and cannot be used as identifiers (i.e., variable names, function names, etc.). Keywords are an integral part of the language and are used to define the syntax and structure of C programs.

Here is a list of the keywords in C programming:

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

Some of the most commonly used keywords in C programming include:

• int: Used to declare integer variables.
• float and double: Used to declare floating-point variables with single and double precision, respectively.
• char: Used to declare character variables.
• void: Used as a return type for functions that do not return a value.
• if, else: Used for conditional statements.
• while, do-while, for: Used for looping statements.
• switch, case, default: Used for switch statements.
• break, continue: Used to alter the control flow of looping statements.
• return: Used to return a value from a function.
• typedef: Used to define new data types.
• struct, union: Used to define structured data types.

It is important to note that keywords in C programming are case-sensitive, meaning that if, IF, and If are considered different keywords.