第九周项目一复数问题增加一目- 与重载<<和>>

最新推荐文章于 2023-01-30 14:43:58 发布

原创最新推荐文章于 2023-01-30 14:43:58 发布 · 260 阅读

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本文详细阐述了复数的概念，通过C++编程语言实现复数类，包括基本的算术运算，如加减乘除，以及与实数的运算，并通过测试函数验证其实现效果。

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问题及代码

<pre class="cpp" name="code">#include<iostream>
using namespace std;
class Complex
{
public:
    Complex()
    {
        real=0;
        imag=0;
    }
    Complex(double r,double i)
    {
        real=r;
        imag=i;
    }
    Complex operator-(int)
    {
        return Complex(0-real,0-imag);
    }
    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);
    friend Complex operator+(const Complex &c1,const double d);
    friend Complex operator-(const Complex &c1,const double d);
    friend Complex operator*(const Complex &c1,const double d);
    friend Complex operator/(const Complex &c1,const double d);
    friend istream &operator>>(istream &in,const Complex &c1);
    friend ostream &operator<<(ostream &out,const Complex &c1);
private:
    double real;
    double imag;
};
//下面定义成员函数
Complex operator+(const Complex &c1,const Complex c2)
{
    return Complex(c1.real+c2.real,c1.imag+c2.imag);
}
Complex operator-(const Complex &c1,const Complex c2)
{
    return Complex(c1.real-c2.real,c1.imag-c2.imag);
}
Complex operator*(const Complex &c1,const Complex c2)
{
    return Complex(c1.real*c2.real,c1.imag*c2.imag);
}
Complex operator/(const Complex &c1,const Complex c2)
{
    return Complex(c1.real/c2.real,c1.imag/c2.imag);
}
Complex operator+(const Complex &c1,const double d)
{
    return Complex(c1.real+d,c1.imag);
}
Complex operator-(const Complex &c1,const double d)
{
    return Complex(c1.real-d,c1.imag);
}
Complex operator*(const Complex &c1,const double d)
{
    return Complex(c1.real*d,c1.imag);
}
Complex operator/(const Complex &c1,const double d)
{
    return Complex(c1.real/d,c1.imag);
}


ostream& operator<<(ostream &out,const Complex &c1)
{
    out<<"("<<c1.real;
    if(c1.imag>=0)out<<"+";
    out<<c1.imag<<"i)"<<endl;
    return out;
}
//下面定义用于测试的main()函数
int main()
{
    Complex c1(3,4),c2(5,-10),c3;
    cout<<"-c1="<<c1-4<<"-c2="<<c2-1;
    cout<<"c1="<<c1;
    cout<<"c2="<<c2;
    cout<<"c1+c2="<<c1+c2;
    cout<<"c1-c2="<<c1-c2;
    cout<<"c1*c2="<<c1*c2;
    cout<<"c1/c2="<<c1/c2;
    cout<<endl;
    double d=7.77;
    Complex c(7,7);
    cout<<"c="<<c1;
    cout<<"d="<<d<<endl;
    cout<<"c+d="<<c+d;
    cout<<"c-d="<<c-d;
    cout<<"c*d="<<c*d;
    cout<<"c/d="<<c/d;
    return 0;
}