example1_basic_usage.cpp

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#include <iostream>
#include <optional>
#include <string>

std::optional<std::string> get_middle_name(bool has_middle_name) {
    if (has_middle_name) {
        return "Jane";
    }
    return std::nullopt;
}

int main() {
    auto middle_name = get_middle_name(true);
    if (middle_name) {
        std::cout << "Middle name: " << *middle_name << std::endl;
    } else {
        std::cout << "No middle name" << std::endl;
    }
    
    return 0;
}