%{
extern int yylex();

#include <stdio.h>
int yyerror (char const *message) { 
  fprintf(stderr,"<%s>\n", message);
  return 0;
}
%}

%error-verbose
%token NUMBER

%%
ListeExpr:
        | ListeExpr Expression {printf ("%d ",$2);}
;
Expression: NUMBER
;
%%

int main(void) { return yyparse(); }