help这个代码该怎么编写呢

Question

希望大家能帮我看看最后c3，c4怎么样才能这样输出呢？不能构造display或者show函数，看看这个代码的要求呢

Answer 1

这个要用到运算符重载，网上搜索关键词 “C++ operator”即可找到答案。

参考：

#include <iostream>

using namespace std;

class CComplex {
    double a;
    double b;
public:
    CComplex() {
        this->a = 0;
        this->b = 0;
    };
    CComplex(double a, double b);
    CComplex operator+(const CComplex &A) const;
    CComplex operator-(const CComplex &A) const;
    friend istream & operator>> (istream &in, CComplex &c);
    friend ostream & operator<< (ostream &ou, const CComplex &c);
};
CComplex::CComplex(double a, double b) {
    this->a = a;
    this->b = b;
}

CComplex CComplex::operator+(const CComplex &A) const {
    CComplex c;
    c.a = this->a + A.a;
    c.b = this->b + A.b;
    return c;
}

CComplex CComplex::operator-(const CComplex &A) const {
    CComplex c;
    c.a = this->a - A.a;
    c.b = this->b - A.b;
    return c;
}

istream &operator>>(istream &in, CComplex &c) {
     in >> c.a >> c.b;
     return in;
}
ostream &operator<<(ostream &ou, const CComplex &c) {
    ou << noshowpos << c.a << showpos << c.b << "i" <<  endl;
    return ou;
}