//: C01:Nonlocal.cpp

       // setjmp() & longjmp()

       #include <iostream>

       #include <csetjmp>

       using namespace std;

        

       class Rainbow {

       public:

         Rainbow() { cout << "Rainbow()" << endl; }

         ~Rainbow() { cout << "~Rainbow()" << endl; }

       };

        

       jmp_buf kansas;

        

       void oz() {

         Rainbow rb;

         for(int i = 0; i < 3; i++)

           cout << "there's no place like home\n";

         longjmp(kansas, 47);

       }

        

       int main() {

         if(setjmp(kansas) == 0) {

           cout << "tornado, witch, munchkins...\n";

           oz();

         } else {

           cout << "Auntie Em! "

                << "I had the strangest dream..."

                << endl;

         }

       } ///:~