题目内容:
有如下程序: #include<iostream> using namespace std; class TestClass{ static int i; public: TestClass(){i++;} ~TestClass(){i--;} static int getVal(){return i;} }; int TestClass::i=0; void f(){TestClass obj2;cout<<obj2.getVal();} int main(){ TestClass obj 1; f(); TestClass *obj3=new TestClass;cout<<obj3->getVal(); delete obj3;cout<<TestClass::getVal(); return 0; } 程序的输出结果是( )。A.232
B.221
C.222
D.231
参考答案: