c – 将一个类作为参数传递,该参数具有不带参数的私有构造函数

模拟器应该在其中携带一个导弹对象的副本.但是Missile没有零参数的公共构造函数,所以我无法将它作为参数传递.

我正在使用Visual studio 2010,它会出现以下错误：

那么,如何将具有私有构造函数的类的对象作为参数传递？

(注意：我的代码没有入口点.我只是想把它编译成一个库.)

@H_538_5@missile.h

#ifndef MISSILE_H
#define MISSILE_H

class Missile
{
    public:
        Missile(double xm0,double ym0,double Vmx0,double Vmy0);
        ~Missile();

    private:
        Missile();                      // Line #11
};

#endif

@H_538_5@missile.cpp

#include "Missile.h"

Missile::Missile(double xm0,double Vmy0)
{
}

Missile::Missile()
{
}

Missile::~Missile()
{
}

Simulator.h

#ifndef SIMULATOR_H
#define SIMULATOR_H

#include "Missile.h"

class Simulator
{
    public:
        Simulator(const Missile & missilE);
        ~Simulator();

    private:
        Missile m_Missile;
};

#endif

Simulator.cpp

#include "Simulator.h"

Simulator::Simulator(const Missile & missilE)
{                                       // Line #4
    m_Missile = missile;                    // Line #5
}

Simulator::~Simulator()
{
}

// In your Simulator.cpp file:
Simulator::Simulator(const Missile & misslE) : m_Missile(misslE)   
                                            /*^^^^^^^^^^^^^^^^*/
                                            /* This part here */
{
    /* No assignment needed */
}

class Missile
{
public:
    Missile(double xm0,double Vmy0);
    ~Missile();

    // Compiler generated copy constructor
    Missile(const Missile& rhs) /* copies each data member */
    {
    }

    // Compiler generated copy assignment operator
    Missile& operator=(const Missile& rhs)
    {
        /* copies each data member */
    } 

private:
    Missile(); // default constructor
};