堆棧和堆棧內存存儲在C++

Question

我有點困惑我的下面的簡單程序的某些成員將獲得存儲？

#include <iostream> 

using namespace std; 

class Human 
{ 
    public: 
     int *age; //where will it get storage? 
     string *name; //where will it get storage? 

     Human(string name, int age) 
     { 
      this->name = new string; //string will got into heap 
      this->age = new int; //int will go into heap 

      *(this->name) = name; 
      *(this->age) = age; 
     } 

     void display() 
     { 
      cout << "Name : " << *name << " Age : " << *age << endl; 
     } 

     ~Human() 
     { 
      cout << "Freeing memory"; 
      delete(name); 
      delete(age); 
     } 
}; 

int main() 
{ 
    Human *human = new Human("naveen", 24); //human object will go into heap 
    human->display(); 
    delete(human); 
    return 0; 
} 

我創建使用new操作類Human對象。因此，它肯定會在堆中得到存儲。但它的屬性age和name將在哪裏獲得存儲？

Answer 1

的成員變量age和name它們分別指向int和string將取決於你如何創建Human類的一個對象被存儲在堆或堆。

存儲在堆棧上：

Human human("naveen", 24); // human object is stored on the stack and thus it's pointer members `age` and `name` are stored on the stack too 

保存在堆上：

Human *human = new Human("naveen", 24); // human object is stored on the heap and thus it's pointer members `age` and `name` are stored on the heap too 

您提供的代碼：

Human *human = new Human("naveen", 24); //human object will go into heap 

//human object will go into heap僅僅指Human類的所有成員存儲在堆上。