%%

%standalone

%class Calc

nl =  \n|\r|\r\n

intNumber =  [1-9][0-9]*

scientificNumbers = [+-]?\d(\.\d+)?[Ee][+-]?\d+

words = [A-Za-z]*\s

characters = [a-z]^[A-z]^[\s]

consonants = [b-df-hj-np-tv-z]

%%

{intNumber} {System.out.println("NUMBER: " +yytext());}

"if" {System.out.println("IF");}

"else" {System.out.println("ELSE");}

"√" {System.out.println("SQRT");}

"words" {System.out.println("WORDS");}

"characters" {System.out.println("CHARACTERS");}

"consonants" {System.out.println("CONSONANTS");}

"+" {System.out.println("PLUS");}

"-" {System.out.println("MINUS");}

"*" {System.out.println("STAR");}

"/" {System.out.println("DIV");}

"(" {System.out.println("OPEN_BRACKET");}

")" {System.out.println("CLOSE_BRACKET");}

"=" {System.out.println("EQUAL\n");}

{nl}|" "|\t {;}

. {System.out.println("Error: " + yytext());}