The Catch Runs Before main Cleans Up

1#include <iostream>
2#include <stdexcept>
3 
4class Session {
5public:
6    Session() { std::cout << "session begins\n"; }
7    ~Session() { std::cout << "session ends\n"; }
8};
9 
10void save(bool ok) {
11    if (!ok) {
12        throw std::runtime_error("save failed");
13    }
14    std::cout << "saved\n";
15}
16 
17int main() {
18    Session session;
19    try {
20        save(true);
21        save(false);
22        save(true);
23    } catch (const std::runtime_error& e) {
24        std::cout << "caught: " << e.what() << "\n";
25    }
26    std::cout << "cleaning up\n";
27    return 0;
28}