example2_error_handling.cpp

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#include <iostream>
#include <optional>
#include <stdexcept>

std::optional<int> safe_divide(int numerator, int denominator) {
    if (denominator == 0) {
        return std::nullopt;
    }
    return numerator / denominator;
}

int main() {
    auto result = safe_divide(10, 2);
    if (result) {
        std::cout << "Result: " << *result << std::endl;
    } else {
        std::cout << "Division by zero" << std::endl;
    }
    
    try {
        std::cout << result.value() << std::endl;
        std::cout << safe_divide(5, 0).value() << std::endl;
    } catch (const std::bad_optional_access& e) {
        std::cout << "Exception: " << e.what() << std::endl;
    }
    
    return 0;
}