cdrepo/lexInFlex.txt

%{
#include<stdio.h>
int count = 0, lcount = 0, tcount = 0;
%}
%%
"//"([a-z]|[0-9]|[A-Z]|" ")*    {printf("\nSingle line comment : %s\n",yytext);}
"/*"([a-z]|[0-9]|[A-Z]|" "|"\n")+"*/"    {printf("\nMulti-line comment : %s\n",yytext);}
[a-zA-Z]*\<[a-zA-Z]*\.\h\> {printf("\nHeaderFile : %s",yytext+7);}
void|int|float|char|double|long|for|while|if|else|case|break|continue|do|extern|enum|return|register|short|signed|sizeof|static|switch|struct|unsigned {printf("\nKeyword : %s",yytext);}
[a-zA-Z]*\( {printf("\nFunction : %s",strcat(yytext,")"));}
"&&"|"||"|"!" {printf("\nLogical Operator : %s",yytext);}
"+"|"-"|"*"|"/"|"--"|"%"|"++" {printf("\nArithmatic Operator : %s",yytext);}
"<"|">"|"!="|"=="|">="|"<=" {printf("\nRelational Operator : %s",yytext);}
"&"|"|"|"^"|"<<"|">>"|"~" {printf("\nBitwise Operator : %s",yytext);}
"=" {printf("\nAssignment Operator : %s",yytext);}
"$"|"@" {printf("\nSpecial Symbol : %s",yytext);}
[a-zA-Z]* {printf("\nIdentifier : %s",yytext);}
-?[0-9]* {printf("\nNumber : %s",yytext);}
-?[0-9]*\.[0-9]* {printf("\nFloating Number : %s",yytext);}
":"|";"|"," {printf("\nDelimiter : %s", yytext);}
" " {count++;}
"\t" {tcount++;}
"\n" {lcount++;}
. {printf("\n");}
%%
main(int argc, char ** argv)
{
	FILE *fp;
	fp = fopen(argv[1],"r");
	yyin = fp;
	yylex();
	printf("\nNumber of WhiteSpaces : %d\n",count);
	printf("\nNumber of Lines : %d\n",(lcount+1));
}
int yywrap()
{
	return 1;
}