无法构建：未定义引用＆＃39; Battery :: Battery（）＆＃39; ...重定位被截断以适合：R_X86_64_PC32对未定义的符号`Battery :: Battery（）＆＃39;

Question

我遇到了在netbeans中构建和运行单元测试的问题。错误在上面的标题以及下面的转储中。[在此处输入图像描述] [1]

build/Debug/Cygwin-Windows/Device.o: In function `Device::Device()':
/cygdrive/c/Users/Sam/Documents/NetBeansProjects/Rover/Device.cpp:11:
undefined reference to 'Battery::Battery()'
/cygdrive/c/Users/Sam/Documents/NetBeansProjects/Rover/Device.cpp:11:(.text+0x26): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `Battery::Battery()'

我在代码中的不同行收到三个相同的错误：

#include "Device.h"

Battery _battery; //error here
Device::Device() //error here
{
}

Device::Device(const Device& orig) { //error here
}

Device::~Device() {
}

void Device::operate() 
{

}

Battery Device::getBattery()
{
    return _battery;
}

设备头文件 - ＆gt;

#include "Battery.h"

#ifndef DEVICE_H
#define DEVICE_H



class Device {
public:
    Device();
    Device(const Device& orig);
    virtual ~Device();

    virtual void operate();
    Battery getBattery();
  //bool connectBattery();
  //bool disconnectBattery();

private:
    Battery _battery;

};

#endif  /* DEVICE_H */

Battery.cpp

    #include "Battery.h"
    int _power;
    Battery::Battery(int power) 
    {
        _power=power;
    }

    Battery::Battery(const Battery& orig) 
    {
    }

    Battery::~Battery() 
    {
    }

    bool Battery::Charge(int pUnit)
    {
        _power += pUnit;
        return true;
    }

    bool Battery::Discharge(int pUnit)
    {
        _power -= pUnit;
        return true;
    }

BATTERY.H

#ifndef BATTERY_H
#define BATTERY_H

class Battery {
public:
    Battery();
    Battery(int power);
    Battery(const Battery& orig);
    virtual ~Battery();

    bool Charge(int pUnit);
    bool Discharge(int pUnit);
private:
    int _power;
};

#endif  /* BATTERY_H */

任何帮助都会很棒，我已经暂时抛弃这个问题了...... 编辑：我也在用Alt-F6 + cppunit测试

测试项目