单项选择题

有如下程序：#include ＜iostream＞using namespace std:class Test{public: Test() {n+=2; ～Test() {n-=3; ; static int getNum() {return n;}privaue: static int n:};int Test::n=1;int main(){ Test* p=new Test; delete p; cout＜＜"n="＜＜Test::getNum()＜＜end1; return 0;} 执行后的输出结果是