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#include <string>#include <iostream>using namespace std;class Thing {        static int count;public:        Thing(Thing const & t) { /* No count incr on copy constructor */ }        Thing(int i = 0) { ++count; }        void print() { cout << count << endl; }};int Thing::count = 0;void foo(Thing t = 2) {        t.print();}int main() {        Thing a(6);        foo();  // 2        foo();  // 3        foo(a); // 3        foo(3); // 4        foo(a); // 4        foo();  // 5        return 0;}