第十周 複數類

#include using namespace std;

class complex
complex(double r,double i)
complex operator-();
//實現輸入、輸出的運算子過載
friend ostream& operator << (ostream& output, const complex& c);
friend istream& operator >> (istream& input, complex& c);
//實現加減乘除的運算子過載
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);
private:
double real;
double imag;
};//實現輸出的運算子過載
ostream& operator << (ostream& output, const complex& c)
while(!((sign=='+'||sign=='-')&&i=='i'));
c.real=a;
c.imag=(sign=='+')?b:-b;
return input;
}complex complex::operator-()
//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)
int main()

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