下列程序的输出结果是______。 #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()<<end1 return 0 }