Question

I need this in c++ please

Write a Map class that is composed of a Location class. Location class has three private variable string nameOfCity, double variables, latitude and longitude. It has a constructor to initialize these and also the usual getters. It has three functions: string toString() which prints :double getFlyingTime(Location l) which returns the flying time between this and location l. It uses the formula that time = distance/speed. speed = 673 miles/hour. No need to convert to minutes. : double getDistance(Location l). This method is used by getFlyingTime. The Map class has function double getFlyingTime(string l, string r); It returns -1 if the two cities are not found in its database. Map class has a vector of 4 location objects. The driver program creates the map by providing the locations to the Map. Once the Map is created, it asks the user for two cities. If the cities are found, it returns the flying distance otherwise it says cities not found. The cities have first letter capitalized and rest small.

I need help implementing the main.cpp

//Location.h

#pragma once

#include <string>

class Location

{

std::string nameOfCity;

double latitude;

double longitude;

public:

Location() = default;

Location(double lat, double longat)

{

latitude = lat;

longitude = longat;

}

std::string getNameOfCity();

double getLatitude();

double getLongitude();

std::string toString();

double getFlyingTime(Location l);

double getDistance(Location l);

};

//Location.cpp

#include "Location.h"

#include <math.h>

using namespace std;

double DegreeToRadians(double degree)

{

return (degree* 3.14 / 180); // We can use PI from math librabry as well for precise values

}

std::string Location::getNameOfCity()

{

return nameOfCity;

}

double Location::getLatitude()

{

return latitude;

}

double Location::getLongitude()

{

return longitude;

}

std::string Location::toString()

{

return "Latitude: " + to_string(latitude) + ", Longitude: " + to_string(longitude);

}

double Location::getFlyingTime(Location l)

{

return getDistance(l) / 673;

}

double Location::getDistance(Location l)

{

double lat1r = DegreeToRadians(latitude);

double lon1r = DegreeToRadians(longitude);

double lat2r = DegreeToRadians(l.getLatitude());

double lon2r = DegreeToRadians(l.getLongitude());

double u = sin((lat2r - lat1r) / 2);

double v = sin((lon2r - lon1r) / 2);

return 2.0 * 6371.0 * asin(sqrt(u * u + cos(lat1r) * cos(lat2r) * v * v)); // 6371.0 is Earth's radius

}

//Map.h

#pragma once

#include <vector>

#include "Location.h"

class Map

{

std::vector<Location> locations;

public:

void addLocation(Location l);

double getFlyingTime(std::string l, std::string r);

};

//Map.cpp

#include "Map.h"

using ::Map;

void Map::addLocation(Location l)

{

for (auto& c : locations)

{

if (c.getNameOfCity() == l.getNameOfCity())

return;

}

locations.emplace_back(l);

}

double Map::getFlyingTime(std::string l, std::string r)

{

bool city1Found = false;

bool city2Found = false;

Location loc1;

Location loc2;

for (auto& c : locations)

{

if (c.getNameOfCity() == l)

{

loc1 = c;

city1Found = true;

}

if (c.getNameOfCity() == r)

{

city2Found = true;

loc2 = c;

}

}

if (city1Found && city2Found)

{

return loc1.getFlyingTime(loc2);

}

return -1;

}

Answer 1

// Location.h

#pragma once

#include <string>

class Location

{

std::string nameOfCity;

double latitude;

double longitude;

public:

Location() = default;

// add city argument in constructor as there is no way to set the nameOfCity in the class

Location(std::string city,double lat, double longat)

{

nameOfCity = city;

latitude = lat;

longitude = longat;

}

std::string getNameOfCity();

double getLatitude();

double getLongitude();

std::string toString();

double getFlyingTime(Location l);

double getDistance(Location l);

};

//end of Location.h

// Location.cpp

#include "Location.h"

#include <math.h>

using namespace std;

double DegreeToRadians(double degree)

{

return (degree* 3.14 / 180); // We can use PI from math librabry as well for precise values

}

std::string Location::getNameOfCity()

{

return nameOfCity;

}

double Location::getLatitude()

{

return latitude;

}

double Location::getLongitude()

{

return longitude;

}

std::string Location::toString()

{

return "Latitude: " + to_string(latitude) + ", Longitude: " + to_string(longitude);

}

double Location::getFlyingTime(Location l)

{

return getDistance(l) / 673;

}

double Location::getDistance(Location l)

{

double lat1r = DegreeToRadians(latitude);

double lon1r = DegreeToRadians(longitude);

double lat2r = DegreeToRadians(l.getLatitude());

double lon2r = DegreeToRadians(l.getLongitude());

double u = sin((lat2r - lat1r) / 2);

double v = sin((lon2r - lon1r) / 2);

return 2.0 * 6371.0 * asin(sqrt(u * u + cos(lat1r) * cos(lat2r) * v * v)); // 6371.0 is Earth's radius

}

//end of Location.cpp

// Map.h

#pragma once

#include <vector>

#include "Location.h"

class Map

{

std::vector<Location> locations;

public:

void addLocation(Location l);

double getFlyingTime(std::string l, std::string r);

};

//end of Map.h

//Map.cpp

#include "Map.h"

using ::Map;

void Map::addLocation(Location l)

{

for (auto& c : locations)

{

if (c.getNameOfCity() == l.getNameOfCity())

return;

}

locations.emplace_back(l);

}

double Map::getFlyingTime(std::string l, std::string r)

{

bool city1Found = false;

bool city2Found = false;

Location loc1;

Location loc2;

for (auto& c : locations)

{

if (c.getNameOfCity() == l)

{

loc1 = c;

city1Found = true;

}

if (c.getNameOfCity() == r)

{

city2Found = true;

loc2 = c;

}

}

if (city1Found && city2Found)

{

return loc1.getFlyingTime(loc2);

}

return -1;

}

//end of Map.cpp

// main.cpp : C++ program to get the flying time between 2 cities input by the user

#include "Map.h"

#include <iostream>

#include <string>

#include <ctype.h>

using namespace std;

int main()

{

               Map map; // create a Map object

               // add 4 locations to Map

               Location l1("Las vegas",36.1699,115.1398);

               Location l2("Mumbai",19.0760,72.8777);

               Location l3("Dallas",32.7767,96.7970);

               Location l4("New york",40.7128,74.0060);

               map.addLocation(l1);

               map.addLocation(l2);

               map.addLocation(l3);

               map.addLocation(l4);

               string city1, city2;

               // input the 2 cities

               cout<<" Enter the name of first city (first letter capitalized and rest small ) : ";

               getline(cin,city1);

               cout<<" Enter the name of second city (first letter capitalized and rest small ) : ";

               getline(cin,city2);

               // format the city names such that first letter is capitalized and rest are small

               string mod_city1="";

               mod_city1 += toupper(city1.at(0));

               for(size_t i=1;i<city1.length()-1;i++)

                              mod_city1 += tolower(city1.at(i));

               string mod_city2="";

               mod_city2 += toupper(city2.at(0));

               for(size_t i=1;i<city2.length()-1;i++)

                              mod_city2 += tolower(city2.at(i));

               // get the flying time

               double flying_time=map.getFlyingTime(mod_city1,mod_city2);

               if( flying_time == -1) // check if city(s) found in database

                              cout<<" City(s) not found in the database"<<endl;

               else

                              cout<<" Flying time between "<<mod_city1<<" and "<<mod_city2<<" : "<<flying_time<<" hours"<<endl;

               return 0;

}

//end of program

Output: