#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;

struct CarInfo {        // Structure containing car details.
    double fuelCapacity;   // in gallons
    double fuelEfficiency; // in miles per gallon
};

void calculateRange(CarInfo *pCar);

int main()
{
    CarInfo myCar {15.0, 30.0};  // Fuel capacity: 15 gallons, Efficiency: 30 mpg
    calculateRange(&myCar);      // Pass the address of the structure to the function.
    return EXIT_SUCCESS;
}

void calculateRange(CarInfo *pCar)
{
    // pCar->member is the same as (*pCar).member
    double maxDistance = pCar->fuelCapacity * pCar->fuelEfficiency;
    cout << "With a fuel capacity of " << pCar->fuelCapacity
         << " gallons and a fuel efficiency of " << pCar->fuelEfficiency
         << " miles per gallon, you can travel up to "
         << maxDistance << " miles.\n";
}

}