下列程序的输出结果是 【11】 。 #include ＜iostream＞ using namespace std; class Test { public:Test() {cnt++;}～Test() {cnt--;}static int Count() (return cnt;} private:static int cnt; }; int Test::cnt=0; int main() {cout＜＜Test::Count()＜＜’’;Test t1, t2;Test *pT3=new Test;Test *pT4=new Test;cout＜＜Test::Count()＜＜’’;delete pT4;delete pT3;cout＜＜Test::Count()＜＜end 1;return 0; }