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C++ 中的 复数

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C++中的复数类 //类的定义（mycomplex.h） #include #ifndef mycomplex_h #define mycomplex_h class complex { private: float real; float image; public: complex(float=0.0,float=0.0); //构造函数 complex(const complex &c); //拷贝构造函数 //以下为运算函数 complex add(const complex &c) const; //加运算 complex sub(const complex &c) const; //减运算 complex mul(const complex &c) const; //乘运算 complex div(const complex &c) const; //除运算 //以下为普通成员函数 float getreal(void) const; //获取实部 float getimage(void) const; //获取虚部 void setcomplex(float r,float i); //重新设定复数值 //以下为输出输入函数重载 friend ostream& operator<<(ostream& out,const complex& c); //输出重载 friend istream& operator>>(istream& in,complex& c); //输入重载 //以下为运算符重载 friend complex operator+(float r,const complex& c); // friend complex operator+(int r,const complex& c); friend complex operator-(float r,const complex& c); friend complex operator-(int r,const complex& c); friend complex operator*(float r,const complex& c); friend complex operator*(int r,const complex& c); friend complex operator+(const complex& c,float r); friend complex operator+(const complex& c,int r); friend complex operator-(const complex& c,float r); friend complex operator-(const complex& c,int r); friend complex operator*(const complex& c,float r); friend complex operator*(const complex& c,int r); friend complex operator/(float r,const complex& c); friend complex operator/(int r,const complex& c); friend complex operator/(const complex& c,float r); friend complex operator/(const complex& c,int r); friend complex operator+(const complex& c1,const complex& c2); friend complex operator-(const complex& c1,const complex& c2); friend complex operator*(const complex& c1,const complex& c2); friend complex operator/(const complex& c1,const complex& c2); }; //定义虚数单位ie const complex ie(0,1); #endif //类的实现(mycomplex.cpp) #include #include "mycomplex.h" //构造函数 complex::complex(float r,float i) { real=r; image=i; } //拷贝构造函数 complex::complex(const complex &c) { real=c.real; image=c.image; } //加运算 complex complex::add(const complex &c) const { complex t; t.real=real+c.real; t.image=image+c.image; return t; } //减运算 complex complex::sub(const complex &c) const { complex t; t.real=real-c.real; t.image=image-c.image; return t; } //乘运算 complex complex::mul(const complex &c) const { complex t; t.real=real*c.real-image*c.image; t.image=image*c.real+real*c.image; return t; } //除运算 complex complex::div(const complex &c) const { if(!(c.real||c.image)) { cout<<"分母不能为零"<0) out<>(istream& in,complex& c) { in>>c.real>>c.image; return in; } //以下为运算符重载 complex operator+(float r,const complex& c) { complex t; t.real=r+c.real; t.image=c.image; return t; } complex operator+(int r,const complex& c) { complex t; t.real=r+c.real; t.image=c.image; return t; } complex operator-(float r,const complex& c) { complex t; t.real=r-c.real; t.image=c.image; return t; } complex operator-(int r,const complex& c) { complex t; t.real=r-c.real; t.image=c.image; return t; } complex operator*(float r,const complex& c) { complex t; t.real=r*c.real; t.image=r*c.image; return t; } complex operator*(int r,const complex& c) { complex t; t.real=r*c.real; t.image=r*c.image; return t; } complex operator+(const complex& c,float r) { complex t; t.real=r+c.real; t.image=c.image; return t; } complex operator+(const complex& c,int r) { complex t; t.real=r+c.real; t.image=c.image; return t; } complex operator-(const complex& c,float r) { complex t; t.real=r-c.real; t.image=c.image; return t; } complex operator-(const complex& c,int r) { complex t; t.real=r-c.real; t.image=c.image; return t; } complex operator*(const complex& c,float r) { complex t; t.real=r*c.real; t.image=r*c.image; return t; } complex operator*(const complex& c,int r) { complex t; t.real=r*c.real; t.image=r*c.image; return t; } complex operator/(float r,const complex& c) { complex t(r,0); return t.div(c); } complex operator/(int r,const complex& c) { complex t((float)r,0); return t.div(c); } complex operator/(const complex& c,float r) { complex t; t.real=c.real/r; t.image=c.image/r; return t; } complex operator/(const complex& c,int r) { complex t; t.real=c.real/(float)r; t.image=c.image/(float)r; return t; } complex operator+(const complex& c1,const complex& c2) { return c1.add(c2); } complex operator-(const complex& c1,const complex& c2) { return c1.sub(c2); } complex operator*(const complex& c1,const complex& c2) { return c1.mul(c2); } complex operator/(const complex& c1,const complex& c2) { return c1.div(c2); } //类的测试(test.cpp) #include #include "mycomplex.h" int main() { //测试函数运算 complex c1,c2; c1.setcomplex(1,2); c2.setcomplex(2,3); cout<<"c1+c2="<>c3; cout<

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