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( )。
