// program that shows that local variables can be recreated by a
// second function call that does not initialize its local variables.
// This allows information to pass from one function to the other
// without any parameter passing, returns, or global variables, just
// by reusing space on the stack.

#include <iostream>
using namespace std;
        
void f1() {
    int x;
    double y;
    x = 15;
    y = 38.9;
    cout << x << endl;
    cout << y << endl;
}
        
void f2() {
    int a;
    double b;
    cout << a << endl;
    cout << b << endl;
}
        
int main() {
    f1();
    f2();

    return 0;
}