Identifiers and keywords

                     Identifiers:

1] Identifires refer to the names of variables, funtions,symbolic constants and arrays.

2] Upper & lover cases are permitted, although lowercase letters are commonly used.

3] There is no limit on number of identifiers defined by user.

4] roll_no,Average,height,counter_1 etc.

 

Kewords

 

1] Every keyword has fixed meaning and it  can't be changed

           2] All the keywords must be                      written in lowercase.

         3] There are only 32 keywords in c.

         4] Ex: if, while, for, goto etc.