2677 4-1 复数类的运算符重载

短命女 2022-06-04 03:18 178阅读 0赞

4-1 复数类的运算符重载

Time Limit: 1000MS Memory Limit: 65536KB

#### Problem Description ####

通过本题目的练习可以掌握成员运算符重载及友元运算符重载

要求定义一个复数类，重载加法和减法运算符以适应对复数运算的要求，重载插入运算符(<<)以方便输出一个复数的要求。

#### Input ####

要求在主函数中创建对象时初始化对象的值。

#### Output ####

输出数据共有4行，分别代表a，b的值和它们求和、求差后的值

#### Example Input ####

无

#### Example Output ####

a=3.2+4.5i
    b=8.9+5.6i
    a+b=12.1+10.1i
    a-b=-5.7-1.1i

#include <bits/stdc++.h>
    
    using namespace std;
    class Complex
    {
        double real,imag;
    public:
        Complex(double r=0, double i=0)
        {
            real = r;
            imag = i;
        }
        void show()
        {
            cout <<real;
            if(imag>=0){cout << '+';}
            //else {cout << '-';}
            cout<< imag << 'i' <<endl;
        }
        Complex operator+(Complex &c2)
        {
            Complex c;
            c.real = real + c2.real;
            c.imag = imag + c2.imag;
            return c;
        }
        Complex operator-(Complex &c2)
        {
            Complex c;
            c.real = real - c2.real;
            c.imag = imag - c2.imag;
            return c;
        }
    };
    
    int main()
    {
        Complex c1(3.2,4.5),c2(8.9,5.6),c3,c4;
        c3 = c1 + c2;
        c4 = c1 - c2;
        cout << "a=";
        c1.show();
        cout << "b=";
        c2.show();
        cout << "a+b=";
        c3.show();
        cout << "a-b=";
        c4.show();
    
        //cout << "Hello world!" << endl;
        return 0;
    }