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%{
#ifdef YYBISON
#define YYSTYPE int
#define YYLEX_PARAM &yylval
#define YYLEX_DECL() yylex(YYSTYPE *yylval)
#define YYERROR_DECL() yyerror(const char *s)
int YYLEX_DECL();
static void YYERROR_DECL();
#endif
%}
%%
S: error
%%
#include <stdio.h>
#ifdef YYBYACC
extern int YYLEX_DECL();
#endif
int
main(void)
{
printf("yyparse() = %d\n", yyparse());
return 0;
}
int
yylex(YYSTYPE *value)
{
return value ? 0 : -1;
}
static void
yyerror(const char* s)
{
printf("%s\n", s);
}
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