C ++中的堆和堆栈内存存储

Question

I am a little bit confused about where certain members of my following simple program will get storage?

#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;
}

I have created a class Human object using new operator. Hence, it will definitely get storage in heap. But where will its properties age and name will get the storage?

Answer 1

The member variables age and name which are pointers to int and string respectively will be stored on the heap or the stack depending on how you create an object of the Human class.

Stored on the stack:

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

Stored on the heap:

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

The code you provided :

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

//human object will go into heap merely means that all members of the Human class are stored on the heap.