为完成下面的程序,应在划线处填入的语句是 #include<iostream> using namespace std; class Base { private:int x; public:Base(int i){ x=i;}~Base(){} }; class Derived:public Base { public:______ //完成类Derive构造函数的定义 }; int main() {Derived obj;return 0; }
A.Derived(int :Base({}
B.Derived(){}
C.Void Derived (int :Base({}
D.Denved(int {Base(;}