The individual elements of a program are called Tokens. In a C program, a number of individual units or elements occur. These elements are called C...
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No. An identifier is any token that matches the
[_A-Za-z][_A-Za-z0-9]*regular expression and not all identifiers are variables: function names, macro names, and constant names are all identifiers.Your rules for variables are also wrong in too many ways to list.