问答题

有如下程序:
#include<iostream>
using namespace std;
class Test
public:
Test() n+=2;
~Test() n-=3;
static int getNum()return n;
private:
static int n;

int Test::n=1;
int main()

Test*p=new Test;
delete p;
cout<<"n="<<Test::getNum()<<endl;
return 0;

执行后的输出结果是( )。

【参考答案】

A