私有变量可以从同一类型的另一个对象访问？ [英] A private variable can be accessed from another object of the same type?

问题描述

可能重复：

C ++类的私有成员设计为对其他类实例不可见。我很困惑，因为私人会员可以访问，如下所示！

Private members of a C++ class are designed to be invisible to other class instances. I'm confused since private members can be accessed as shown below! Can anyone explain it to me?

以下是我的代码：

#include <iostream> 
using namespace std; 
class Person
{
private:
    char* name;
    int age;
public:
    Person(char* nameTemp, int ageTemp)
    {
      name = new char[strlen(nameTemp) + 1];
      strcpy(name, nameTemp);
      age = ageTemp;
    }
    ~Person()
    {
      if(name != NULL)
        delete[] name;
      name = NULL;
    }
    bool Compare(Person& p)
    {
      //p can access the private param: p
      //this is where confused me
      if(this->age < p.age) return false;
        return true;
    }
};
int main() 
{ 
  Person p("Hello, world!", 23);
  return 0; 
}

推荐答案

它的所有类实例的私有属性，至少在C ++中。

Methods of a class can access its private attributes throughout all class instances, at least in C++.

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