c++成员运算符的重载

 

下面是自己编写的一个例子 

#include <string>
#include <iostream>
#include <memory>
using namespace std;
 
class B
{
	public:
		B() = default;
		B(const string &str):arr({"sss1","sss2","sss3","sss4"}),curr(0){}
		string & operator*()
			{
			return arr[curr];
			}
		string * operator->()
			{
				return & this->operator*();			
			}
	private:
		size_t curr = 0;
		string arr[100] = {"str1","str2","str3","str4"};
};
 
 
 
class A
{
	public:
	A() = default;
	A(const string & str)
	{
	for(int i = 0;i != 100; ++i)
		{
		bind[i] = B("ok");		
		}
	}
	
	B& operator*()
	{
		return bind[curr];
	
	}
	B& operator->()
		{
		return  operator*();//这里因为operator*返回对象
		}
	private:
		size_t curr = 0;
		B bind[100];
};
 
 
 
int main()
{
A a;
cout << a->size() << endl;
 
 
	return 0;
}