help这个代码该怎么编写呢

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

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;
}

如有用请采纳

#include<string>
#include<iostream>
using namespace std;

struct fushu
{
    int INT;
    int VOID;
};
void AddFunc(fushu a, fushu b)
{
    int m_INT;
    int m_VOID;
    
    m_INT = a.INT + b.INT;
    m_VOID = a.VOID + b.VOID;

    cout << "两个复数的和是：" << m_INT << "+" << m_VOID << "i" << endl;
}
void MinusFunc(fushu a, fushu b)
{
    int m_INT;
    int m_VOID;

    m_INT = a.INT - b.INT;
    m_VOID = a.VOID - b.VOID;
    if (m_VOID<0){
        cout << "两个复数的差是：" << m_INT  << m_VOID << "i" << endl;
    }
    else{
        cout << "两个复数的差是：" << m_INT << "+" << m_VOID << "i" << endl;
    }
    }

int main()
{
    fushu a;
    fushu b;
    
    cout << "请分别输入第一个复数的实部和虚部：" << endl;
    cin >> a.INT >> a.VOID;

    cout << "请分别输入第二个复数的实部和虚部：" << endl;
    cin >> b.INT >> b.VOID;
    cout << "第一个复数是：" << a.INT << "+" << a.VOID << "i" << endl;
    cout << "第二个复数是：" << b.INT << "+" << b.VOID << "i" << endl;
    AddFunc(a,b);
    MinusFunc(a,b);
    return 0;
}

基本可以了，可以直接运行
记得控制台输入四个数

```c++
#include<iostream>
#include<string>
using namespace std;

class CComplex {
    private:
        double real;
        double image;
    public:
        CComplex(double r = 0.0, double i = 0.0);
        friend ostream & operator<< (ostream &ou, const CComplex &c);
        CComplex operator+ (CComplex c);
        CComplex operator- (CComplex c);

};
 
ostream &operator<< (ostream &ou, const CComplex &c) {
    if (c.image >= 0)
    return ou << c.real << "+" << c.image << "i" << endl;
    else
    return ou << c.real << c.image << "i" << endl;
}
        
CComplex::CComplex(double r,double i) {
            real = r;
            image = i;
        }
        
CComplex CComplex::operator+ (CComplex c) {
            CComplex temp;
            temp.real = real + c.real;
            temp.image = image + c.image;
            return temp;
        }
        
CComplex CComplex::operator- (CComplex c) {
            CComplex temp;
            temp.real = real - c.real;
            temp.image = image - c.image;
            return temp;
        }
        
int main() {
    double r1, r2, i1, i2;
    cin>>r1>>i1;
    cin>>r2>>i2;
    CComplex c1(r1, i1), c2(r2, i2), c3, c4;
    cout<<c1;
    cout<<c2;
    c3 = c1 + c2;
    cout<<c3;
    c4 = c1 - c2;
    cout<<c4;
    return 0;
}

```