有如下程序: #include<iostream> using namespace std; class Base{ int x; public: Base(int n=0):x(n){cout<<n;} int getX( )const{return x;} }; class Derived:public Base{ int y; public: Derived(int m,int n):y(m),Base(n){tout<<m;} Derived(int m):y(m){cout<<m;} }; int main( ){ Derived dl(3),d2(5,7); return 0; } 程序的输出结果是
A.375
B.357
C.0375
D.0357