第八周项目一复数类之友元函数的运算符重载

初学对象6：C++复数运算的实现与测试

最新推荐文章于 2025-02-17 16:42:58 发布

原创最新推荐文章于 2025-02-17 16:42:58 发布 · 369 阅读

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本文详细介绍了如何在C++中实现复数类及其四则运算，并通过实例展示了类成员函数和友元函数的使用。通过测试不同复数运算，验证了代码的正确性和效率。

问题及代码

#include<iostream>
using namespace std;
class Complex
{
public:
    Complex(){real=0;imag=0;}
    Complex(double r,double i){real=r; imag=i;}
    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);
    void display();
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);
}
void Complex::display()
{
    cout<<"("<<real<<","<<imag<<")"<<endl;
}

//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.display();
    cout<<"c2=";
    c2.display();
    c3=c1+c2;
    cout<<"c1+c2=";
    c3.display();
    c3=c1-c2;
    cout<<"c1-c2=";
    c3.display();
    c3=c1*c2;
    cout<<"c1*c2=";
    c3.display();
    c3=c1/c2;
    cout<<"c1/c2=";
    c3.display();
    return 0;
}