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 = ;
         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[];

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

     delete[]p;

     system("pause");
 }