题目内容

下列程序的执行结果是()。# 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 O;}

A. n=0
B. n=1
C. n=2
D. n=3

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