Keywords in C program

 Keywords in c

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.There are a total of 32 keywords in C.

C Keywords

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 1 : int x;

Here, int is a keyword that indicates x is a variable of type int (integer).

Example 2 : int do;

In above example we can not use do as variable name as it is keyword.In that case compiler generate error

NOTE : As C is a case sensitive language, all keywords must be written in lowercase.