C 實踐參考 複數類中的運算子過載

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【專案-實現複數類中的運算子過載】

（1）請用類的成員函式，定義複數類過載運算子+、-、*、/，使之能用於複數的加減乘除

class complex 

complex(double r,double i)
complex operator+(const complex &c2);
complex operator-(const complex &c2);
complex operator*(const complex &c2);
complex operator/(const complex &c2);
void display();
private:
double real;
double imag;
};//下面定義成員函式
//下面定義用於測試的main()函式
int main()

#include using namespace std;

class complex
complex(double r,double i)
complex operator+(const complex &c2);
complex operator-(const complex &c2);
complex operator*(const complex &c2);
complex operator/(const complex &c2);
void display();
private:
double real;
double imag;
};//下面定義成員函式
//複數相加： (a+bi)+(c+di)=(a+c)+(b+d)i.
complex complex::operator+(const complex &c2)
//複數相減：(a+bi)-(c+di)=(a-c)+(b-d)i.
complex complex::operator-(const complex &c2)
//複數相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.
complex complex::operator*(const complex &c2)
//複數相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i
complex complex::operator/(const complex &c2)
void complex::display()
complex(double r,double i)
friend complex operator+(complex &c1, complex &c2);
friend complex operator-(complex &c1, complex &c2);
friend complex operator*(complex &c1, complex &c2);
friend complex operator/(complex &c1, complex &c2);
void display();
private:
double real;
double imag;
};//複數相加：(a+bi)+(c+di)=(a+c)+(b+d)i.
complex operator+(complex &c1, complex &c2)
//複數相減：(a+bi)-(c+di)=(a-c)+(b-d)i.
complex operator-(complex &c1, complex &c2)
//複數相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.
complex operator*(complex &c1, complex &c2)
//複數相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i
complex operator/(complex &c1, complex &c2)
void complex::display()
complex(double r,double i)
double getreal() const
double getimag() const
void setreal(double r)
void setimag(double i)
void display();
private:
double real;
double imag;
};//複數相加：(a+bi)+(c+di)=(a+c)+(b+d)i.
complex operator+(const complex &c1, const complex &c2) //(3)將引數處理為const更符合需求
//複數相減：(a+bi)-(c+di)=(a-c)+(b-d)i.
complex operator-(const complex &c1, const complex &c2)
//複數相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.
complex operator*(const complex &c1, const complex &c2)
//複數相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i
complex operator/(const complex &c1, const complex &c2)
void complex::display()
complex(double r,double i)
friend complex operator+(complex &c1, complex &c2);
friend complex operator+(double d1, complex &c2);
friend complex operator+(complex &c1, double d2);
friend complex operator-(complex &c1, complex &c2);
friend complex operator-(double d1, complex &c2);
friend complex operator-(complex &c1, double d2);
friend complex operator*(complex &c1, complex &c2);
friend complex operator*(double d1, complex &c2);
friend complex operator*(complex &c1, double d2);
friend complex operator/(complex &c1, complex &c2);
friend complex operator/(double d1, complex &c2);
friend complex operator/(complex &c1, double d2);
void display();
private:
double real;
double imag;
};//複數相加：(a+bi)+(c+di)=(a+c)+(b+d)i.
complex operator+(complex &c1, complex &c2)
complex operator+(double d1, complex &c2)
complex operator+(complex &c1, double d2)
//複數相減：(a+bi)-(c+di)=(a-c)+(b-d)i.
complex operator-(complex &c1, complex &c2)
complex operator-(double d1, complex &c2)
complex operator-(complex &c1, double d2)
//複數相乘：(a+bi)(c+di)=(ac－bd)+(bc+ad)i.
complex operator*(complex &c1, complex &c2)
complex operator*(double d1, complex &c2)
complex operator*(complex &c1, double d2)
//複數相除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +(bc-ad)/(c^2+d^2)i
complex operator/(complex &c1, complex &c2)
complex operator/(double d1, complex &c2)
complex operator/(complex &c1, double d2)
void complex::display()
int main()

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