面向对象程序设计-C++_课时11new & delete

Dynamic memory allocation

new

new int;

new Stash;

new int[10];

new返回这个对象的指针

delete

delete p;

delete[]p;

#include <iostream>
using namespace std;

class A
{
private:
    int i;
public:
    A()
    {
        i = 0;
        std::cout << "A::A()" << std::endl;
    }
    ~A()
    {
        std::cout << "~A::A(),i=" << i << std::endl;
    }
    void set(int i)
    {
        this->i = i;
    }
    void f()
    {
        std::cout << "hello" << std::endl;
    }
};

void main()
{
    A *p = new A[10];

    for (int i = 0; i < 10; i++)
    {
        p[i].set(i);
    }

    delete[]p;

    system("pause");
}