Variable

  •  Programming language enable you to assign symbolic names, known as variable names, for storing program computations and results.
  • A variable name can be chosen bye you in a meaningful way to reflect the type of value that is to be stored in that variable.

The rules for forming variable names

  • They must begin with a letter or underscore (_) and can followed bye any combination of letters (upper or lowercase),underscores or the digits 0-9.
                            e.g. - sum
                                     pieceflag
                                     i
                                     Number_of_moves
                                     _sysflag     
  • You should always remember that upper and lowercase letter are distinct in C.