#include <iostream>
#include <cstdlib>
#include <string>   //for class string
#include <vector>   //for class vector
#include <map>      //for class map
using namespace std;

int main()
{
	map<string, vector<string>> m {
		{"Honda",  {"Red",   "Blue",   "Black"}},
		{"Toyota", {"White", "Silver", "Green"}}
	};

	string carModel;
	cout << "What is the model of the car (one of the following)?\n";
	for (auto& pair: m) {
		cout << "\t" << pair.first << "\n";   //the name of each model
	}
	cout << "Model? ";
	cin >> carModel;

	if (!cin) {
		cerr << "Sorry, could not receive input.\n";
		return EXIT_FAILURE;
	}

	auto it {m.find(carModel)};   //Look up the model the user asked for.

	if (it == m.end()) {
		cerr << "Sorry, that wasn't a valid car model.\n"
			<< "Please enter one of the following:\n";
		for (auto& pair: m) {
			cerr << "\t" << pair.first << "\n";
		}
		return EXIT_FAILURE;
	}

	cout << "The available colors for the " << it->first << " are:\n";
	auto v {it->second};   //Get the vector of colors for our model.

	for (int i {0}; i < v.size(); ++i) { 
		cout << i+1 << ". " << v[i] << "\n";
	}

	return EXIT_SUCCESS;
}