关于c++中前++后++运算符重载问题

 1 #include<iostream>
 2 using namespace std;
 3 
 4 class Complex{
 5 public:
 6     Complex(int a,int b){
 7         this->a=a;
 8         this->b=b;
 9     }
10 
11     void printComplex(){
12         cout<<"("<<this->a<<","<<this->b<<"i)"<<endl;
13     }
14     friend Complex& operator++(Complex& c);/*友元函数声明*/
15     friend const Complex operator++(Complex& c,int);
16 /*
17     局部中的重载前++运算符
18     Complex& operator++(){
19         this->a++;
20         this->b++;
21 
22         return *this;
23     }
24 */
25 /*
26     局部中的重载后++运算符
27     const Complex operator++(int){//亚元(即占位符，坑啊~~~)
28         Complex temp(this->a,this->b);
29         this->a++;
30         this->b++;
31         
32         return temp;
33     }
34 */
35 private:
36     int a;
37     int b;
38 };
39 
40 /*重载前++运算符*/
41 Complex& operator++(Complex& c){
42     c.a++;
43     c.b++;
44     return c;
45 }
46 /*重载后++运算符，后++不可以多次进行*/
47 const Complex operator++(Complex& c,int){//int 为占位符
48     Complex temp(c.a,c.b);
49     c.a++;
50     c.b++;
51 
52     return temp;
53 }
54 
55 int main(){
56     Complex c1(1,2);
57     ++++c1;//可以多次进行前置++
58     c1.printComplex();
59     c1++;
60     c1.printComplex();
61 
62     return 0;
63 }