digit [0-9]
intnumber [+-]?{digit}+
floatnum [+-]?{digit}+\.{digit}*|[+-]?{digit}*\.{digit}+
letter [a-zA-Z]
identifier ({letter}|_)({digit}|{letter}|_)*
blank [\t\x0B\f\r\x20]+
notes (/\*)([.|\n])*(\*/)
error1 {digit}+_({letter}|{digit}|_)*

%%
"notes" { printf(" "); }
\n { printf("\n"); }
{error1} { printf("e_r_r_o_r"); }


"int" { printf("INT"); }
"long" { printf("LONG_INT"); }
"float" { printf("FLOAT"); }
"double" { printf("DOUBLE"); }
"char" { printf("CHAR"); }
"if" { printf("IF"); }
"else" { printf("ELSE"); }
"do" { printf("DO"); }
"while" { printf("WHILE"); }
"for" { printf("FOR"); }
"switch" { printf("SWITCH"); }
"case" { printf("CASE"); }
"break" { printf("BREAK"); }
"void" { printf("VOID"); }
"auto" { printf("AUTO"); }
"const" { printf("CONST"); }
"continue" { printf("CONTINUE"); }
"default" { printf("DEFAULT"); }
"enum" { printf("ENUM"); }
"extern" { printf("EXTERN"); }
"goto" { printf("GOTO"); }
"register" { printf("REGISTER"); }
"#include<stdio.h>" { printf("#include<stdio.h>"); }



"(" { printf("LB "); }
")" { printf("RB "); }
"[" { printf("LF "); }
"]" { printf("RF "); }
"{" { printf("LD"); }
"}" { printf("RD"); }
";" { printf("FH"); }

"." { printf("PIT "); }
"-" { printf("SU "); }
"!" { printf("NT "); }
"*" { printf("MU "); }
"/" { printf("DI "); }
"+" { printf("AD "); }
"<" { printf("SM"); }
">" { printf("LA  "); }
"<=" { printf("SE "); }
">=" { printf("LE "); }
"==" { printf("EQ "); }
"!=" { printf("NE "); }
"&&" { printf("AND "); }
"||" { printf("OR "); }
"=" { printf("AS "); }
"++" { printf("IN "); }
"--" { printf("DE "); }

{blank} { printf(" "); }
{identifier} { printf("identifier"); }
{floatnum} { printf("floatnum"); }
{intnumber} { printf("intnumber"); }

. { printf("e_r_r_o_r"); }

%%
int main(int argc,char** argv) {
	if(argc>1) {
		if(!(yyin=fopen(argv[1],"r"))) {
         			perror(argv[1]);
         			return 1;
		}
	}
	while(yylex()!=0);
	return 0;
}