1 #include <iostream>
2 using namespace std;
3
4 //static成员,每个类型都会实例化,创建一个变量,类型一致则共享,否则不共享
5
6 template <class T>
7 class myclass
8 {
9 public:
10 static int num;
11 myclass()
12 {
13 num += 1;
14 }
15 ~myclass()
16 {
17 num -= 1;
18 }
19 void show()
20 {
21 cout << "num:" << num << endl;
22 cout << typeid(*this).name() << endl;
23 }
24 };
25
26 template<class T>
27 int myclass<T>::num = 0;
28
29 void main()
30 {
31 myclass<int> *p = new myclass<int>[10];
32 p->show();
33
34 myclass<double> *p2 = new myclass<double>[19];
35 p2->show();
36 cin.get();
37 }
