lex/ast-lex-yacc/main.l

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%option noyywrap
%{
#include <stdio.h>
#include "yacc.yy.h"
#define YYDEBUG 1
int yyLineNumber = 1;
%}
%%
\n yyLineNumber++;
0|[1-9][0-9]* return(Number); // integer numbers
"VAR"|"var" return(Variable);
"INT"|"int" return(Integer);
[a-zA-Z]+ return(Ident);
"," return(',');
":" return(':');
";" return(';');
"+" return('+');
"-" return('-');
"(" return('(');
")" return(')');
[ \t]
. print_stdout("unknown Symbol");
%%
/*
int main()
{
printf("Programm eingeben: \n");
yylex();
return 0;
}
*/
int print_stdout(char token[]) {
printf("\nFLEX/[INF] >>> Token (%d) AS %s ```%s```\n", yyLineNumber, token, yytext);
}