数据结构课第一次实验

实现复数运算

复习知识点: 运算符重载

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//complex number.hpp

#ifndef complex_number_hpp
#define complex_number_hpp

#include <stdio.h>
#include <iostream>
#include <string>
#include <cstring>


template <typename ElemType>
class ComplexNumber {
private:
ElemType x;
ElemType y;
public:
// ComplexNumber() = default;
ComplexNumber(ElemType _x = 0,ElemType _y = 0);
ComplexNumber(ComplexNumber&);


ComplexNumber<ElemType>& operator+(ComplexNumber&);
ComplexNumber<ElemType>& operator+(ElemType x);
ComplexNumber<ElemType>& operator-(ComplexNumber&);
ComplexNumber<ElemType>& operator-(ElemType x);
ComplexNumber<ElemType>& operator*(ComplexNumber&);
ComplexNumber<ElemType>& operator*(ElemType x);
ComplexNumber<ElemType>& operator/(ComplexNumber&);
ComplexNumber<ElemType>& operator/(ElemType x);
ComplexNumber<ElemType>& operator+=(ComplexNumber&);
ComplexNumber<ElemType>& operator-=(ComplexNumber&);
ComplexNumber<ElemType>& operator=(ComplexNumber&);

ComplexNumber<ElemType> create(ElemType _x,ElemType _y) {
ComplexNumber c(_x,_y);
return c;
}
// ComplexNumber<ElemType> create(ElemType& cn) {
// return ComplexNumber(cn);
// }

friend std::ostream& operator<<(std::ostream& out,ComplexNumber<ElemType>& cn) {
if (!cn.x && !cn.y) {
out << "0";
return out;
} else if (!cn.x) {
out << cn.y << "i";
return out;
} else if (!cn.y) {
out << cn.x;
return out;
}
out << cn.x << "+" << cn.y << "i";
return out;
}
friend std::istream& operator>>(std::istream& in, ComplexNumber<ElemType>& cn) {
in >> cn.x >> cn.y;
return in;
}



};


#endif /* complex_number_hpp */

//complex number.cpp

//constructor

template <typename ElemType>
ComplexNumber<ElemType>::ComplexNumber(ElemType _x,ElemType _y) {
x = _x;
y = _y;
}


template <typename ElemType>
ComplexNumber<ElemType>::ComplexNumber(ComplexNumber& cn) {
this->x = cn.x;
this->y = cn.y;
}


//overload operator

template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator+(ComplexNumber& cn) {
ComplexNumber c;
c.x = cn.x + this->x;
c.y = cn.y + this->y;
return c;
}
template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator+(ElemType x) {
ComplexNumber c;
c.x = this->x + x;
c.y = this->y;
return c;
}


template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator-(ComplexNumber& cn) {
ComplexNumber c;
c.x = this->x - cn.x;
c.y = this->y - cn.y;
return c;
}
template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator-(ElemType x) {
ComplexNumber c;
c.x = this->x - x;
c.y = this->y;
return c;
}


template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator*(ComplexNumber& cn) {
ComplexNumber<ElemType> c(this->x * cn.x - this->y * cn.y,0);
c.x = this->x * cn.x - this->y * cn.y;
c.y = 0;
return c;
}
template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator*(ElemType x) {
ComplexNumber<ElemType> c;
c.x = this->x * x;
c.y = this->y;
return c;
}


template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator/(ComplexNumber& cn) {
ComplexNumber<ElemType> c(this->x * 1.0 / cn.x,this->y * 1.0 / cn.y);
return c;
}




template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator=(ComplexNumber& cn) {
this->x = cn.x;
this->y = cn.y;
return *this;
}
template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator+=(ComplexNumber& cn) {
this->x += cn.x;
this->y += cn.y;
return *this;
}
template <typename ElemType>
ComplexNumber<ElemType>& ComplexNumber<ElemType>::operator-=(ComplexNumber& cn) {
this->x -= cn.x;
this->y -= cn.y;
return *this;
}
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