大一第二学期第5周【程序阅读（5）】

#include<iostream>using namespace std;class myClass{public:    myClass(){ number++;}    ~myClass(){ number--;}    static int number;};int myClass::number=0;int main(){    myClass *ptr;    myClass A,B;    myClass *ptr_Arr=new myClass[3];    ptr=ptr_Arr;    myClass C;    cout<<myClass::number<<endl;    delete []ptr;    return 0;}