Inner and Outer Handlers

1#include <iostream>
2#include <stdexcept>
3 
4void process(int item) {
5    if (item == 2) {
6        throw std::invalid_argument("item 2 is damaged");
7    }
8    if (item == 3) {
9        throw std::runtime_error("belt stopped");
10    }
11    std::cout << "packed item " << item << "\n";
12}
13 
14int main() {
15    try {
16        for (int item = 1; item <= 4; item++) {
17            try {
18                process(item);
19            } catch (const std::invalid_argument& e) {
20                std::cout << "skipped: " << e.what() << "\n";
21            }
22        }
23        std::cout << "all items done\n";
24    } catch (const std::runtime_error& e) {
25        std::cout << "line halted: " << e.what() << "\n";
26    }
27    std::cout << "shift over\n";
28    return 0;
29}