Added 'C_C++/bison/error.y'

C_C++/bison/error.y

@@ -0,0 +1,27 @@
+/* @BAKE
+    bison -Wcounterexamples --header=error.tab.h -o error.tab.c $@;
+    gcc error.tab.c -o error;
+    ./error;
+   @STOP
+*/
+%{
+#include <stdlib.h>
+#include <stdio.h>
+#include "error.tab.h"
+int yylex() {
+    static int i = 0;
+    const int alpha[] = {B, 0};
+    return alpha[i++];
+}
+void yyerror() { ; }
+%}
+%token A B
+%%
+i: A
+    | error B    { yyerrok; puts("We recovered!"); }
+    ;
+%%
+signed main() {
+    yyparse();
+    return 0;
+}