类到字符串的方法

首先，对糟糕的格式表示抱歉，我还在努力适应，但问题来了。我有一个类EndPoint，它是一串字符串，还有一个类Package，它是两个端点和两个double类型。使用这两种方法的.cpp文件在以下代码行中完成:

EndPoint homer{"Homer Simpson", "742 Evergreen Terrace", "Springfield",
 "FL", "32401"};
EndPoint donald{"Donald Duck", "1313 Webfoot Walk", "Duckburg",
  "CA", "95501"};
EndPoint kermit{"Kermit Frog", "On the Swamp", "Leland", "MS", "38756"};  
Package regular{ homer, donald, 25.0, 0.20};

我如何制作这些网格?我遇到的主要错误是EndPoint不能作为一个类读取到Package的字符串中。如果你能帮我弄清楚出了什么问题，我真的很感激。

Package.cpp

#include "Package.h"
#include <iomanip>
#include <stdexcept>
#include <sstream>
#include <string>
using namespace std;
Package::Package(EndPoint Sender, EndPoint Reciever, double rate, double weight) {
    EndPoint SenderName = Sender;
    EndPoint RecieverName = Reciever;
    Rate = rate;
    Weight = weight;    
    setWeight(weight);
    setRate(rate);

}
 EndPoint:: EndPoint(const std::string&Endname, const std::string&EndAddress, const std::string&EndCity, const std::string&EndState, const std :: string&endzip)
{
    EndName = Endname;
    EndAddress1 = EndAddress;
    EndCity1 = EndCity;
    EndState1 = EndState;
    ZipCode1 = endzip;
};
void  Package::setSender(std::string Sender) {
    SenderName = Sender;
 }
string Package::getSender() { return SenderName; }
void  Package::setReciever(Reciever) {
    RecieverName = Reciever;
}
string Package::getRecieverName() const { return RecieverName; }

void  Package::setWeight(double weight) {
    if (weight < 0.0) {
        throw invalid_argument("Weight must be >= 0.0");
    }
    Weight = weight;
}
double Package::getWeight() const { return Weight; }
void  Package::setRate(double rate) {
    if (rate <= 0.0 || rate >= 1.0) {
        throw invalid_argument("Rate must be > 0.0 and < 1.0");
    }

    Rate = rate;
}
double Package::getRate() const { return Rate; }
double Package::calculateCost() const {
    return Weight * Rate;
}
string Package::toString() const {
    ostringstream regular;
    regular << fixed << setprecision(2); // two digits of precision   
    regular << "Sender Name: " << SenderName
        << "n Reciever Name: " << RecieverName
        << "n Rate: " << Rate
        << "n Weight: " << Weight;
    return regular.str();
}

void  EndPoint::setEndName(const string& Endname) {
    EndName = Endname;
}
string EndPoint::getEndName() const { return EndName; }
void  EndPoint::setEndAddress(const string& EndAddress) {
    EndAddress1 = EndAddress;
}
string EndPoint::getEndAddress() const { return EndAddress1; }
string EndPoint::getCity() const { return EndCity1; }
void  EndPoint::setCity(const string& EndCity) {
    EndCity1 = EndCity;
}
string EndPoint::getState() const { return EndState1; }
void  EndPoint::setState(const string& EndState) {
    EndState1 = EndState;
}
string EndPoint::getZipCode() const { return ZipCode1; }
void  EndPoint::setZipCode(const string& ZipCode) {
    ZipCode1 = ZipCode;
}

Package.H

    #ifndef PACKAGE_H
#define PACKAGE_H
#include<string>

class Package {
public:
        Package(EndPoint, EndPoint, double = 0.0, double = 0.0);
        void setSender(EndPoint);
        std::string getSender() const;
        void setReciever(EndPoint);
        std::string getRecieverN() const;
        void setRate(double);
        double getRate() const;
        void setWeight(double);
        double getWeight() const;


    EndPoint SenderName;
    EndPoint RecieverName;
    double Rate;
    double Weight;
    double calculateCost() const; // calculate earnings
    std::string toString() const;
};
class EndPoint {
public:
    EndPoint(const std::string&, const std::string&, const std::string&, const std::string&, const std::string&);
    void setEndName(const std::string&);
    std::string getEndName() const;
    void setEndAddress(const std::string&);
    std::string getEndAddress() const;
    void setCity(const std::string&);
    std::string getCity() const;
    void setState(const std::string&);
    std::string getState() const;
    void setZipCode(const std::string&);
    std::string getZipCode() const;
protected:
    std::string EndName;
    std::string EndAddress1;
    std::string EndCity1;
    std::string EndState1;
    std::string ZipCode1;
    std::string toString() const;
};
#endif