Write a lex program to remove the comments, extra white spaces/tabs/newlines etc., and tokenize all valid C program constructs, such as integer constants, floating point constants, character/string constants, identifiers, Keywords, operators like Arithmetic, Relational, Assignment, Conditional, bitwise etc., and install the necessary information of the tokens identifiers and constants, into a symbol table.
The symbol table should maintain at least the following information for the identifiers and constants.
• token name
• lexeme
• value (if any)
For example, for a C statement int marks=95;, these values should be,
• token name is id1
• lexeme is marks
• value is 95
Note: There may be many identifiers in your source program. You may identify each of them by giving
unique token names (like id1 , id2 , ....
The input is a C program whose name is given as command line argument, and output should be a) contents of symbol table b) all other token, displayed on the screen.
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