I need to have a key with multiple values. What datastructure would you recommend?

Question

I have an string array filled with words from a sentence.

words[0] = \"the\"
words[1] = \"dog\"
words[2] = \"jumped\"
words[3] = \"over\"
words[4] = \"the\"
word         


        

Answer 1

I've found that a struct may work well for this situation. This approach (basically akin to a class) allows a cleaner access to your parameters named as you see fit.

struct car_parts {

    string wheelType;
    string engine;
    int number_of_cylinders;

    car_parts(string _wheelType, string _engine, int _number_of_cylinders)
    {
        wheelType = _wheelType;
        engine = _engine;
        number_of_cylinders = _number_of_cylinders;
    }
};

int main()
{
    // Populate the dictionary
    map vehicles =
    {
        { 'I', car_parts("All terrain", "X2", 6) },
        { 'C', car_parts("Summer only", "BB", 8) },
        { 'U', car_parts("All terrain", "X3", 4) }
    };

    map::iterator it;

    it = vehicles.find('I');

    if (it != vehicles.end())
    {
        cout << "The vehicle with key of I has " << it->second.number_of_cylinders << " cylinders\n";
    }
}