This code, which is clearly undefined behavior (because of dangling pointer), outputs the number 2, which is very worrisome. #include <iostream> using

This code, which is clearly undefined behavior (because of dangling pointer), outputs the number 2, which is very worrisome. #include <iostream> using namespace std; int* foo() { int y = 2; return &y; } int main() { int* x = foo(); cout << *x << endl; return 0; } I would recommend not using this for educational purposes yet; it could mislead students about pointer usage.