Question

我正在完成任务，并在特定区域撞墙。我无法弄清楚我应该如何将标头中的非成员函数实现到.cpp文件中。这是标题：

class complx
{
    double real, imag;
public:
    complx( double real = 0., double imag = 0.); // constructor
    complx operator+(complx);       // operator+()

    complx operator+(double);       // operator+()with double
    complx operator- (complx);       // operator-()
    complx operator* (complx);       // operator*()

    bool operator== (complx);   // operator==()


    //Sets private data members.
    void Set(double new_real, double new_imaginary) {
        real = new_real;
        imag = new_imaginary;
    }

    //Returns the real part of the complex number.
    double Real() {
        return real;
    }

    //Returns the imaginary part of the complex number.
    double Imaginary() {
        return imag;
    }
};

ostream &operator << ( ostream &out_file, complx number );

extern istream &operator >> ( istream &in_file, complx &number );

extern ifstream &operator >> ( ifstream &in_file, complx &number );

complx &operator + (double, complx);
complx &operator - (double, complx);
complx &operator * (double, complx);
}

我已经找到了大部分成员函数，但它是标题底部的三个让我适合的。任何帮助将不胜感激。谢谢！

P.S。抱歉格式化，它不是很好地复制。

Answer 1

在你的.ccp文件中：

ostream &operator << ( ostream &out_file, complx number )
{
  out_file << number.Real() << "," << number.Imaginary();
  return out_file;
}

与其他人类似。

诀窍是将复数分解为其元素（Real和Imaginary）并对其执行所需的操作（并为+，-的返回值创建一个新的复杂对象， *）。

实现非成员函数

1 个答案: