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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