更多"若有以下程序:#include <iostream>using nam"的相关试题:
[填空题]若有以下程序:
#include <iostream>
using namespace std;
class Basepublic:
Base( )
x=0;
int x;
;
class Derived1: virtual public Basepublic:
Derived1( )
x=10;
;
class Derived2: virtual public Basepublic:
Derived2( )
x=20;
;
class Derived: public Derived1, protected Derived2
;
int main( ) Derived obj;
cout<<obj.x<<end1;
return 0;该程序运行后的输出结果是 【15】 。
[单项选择]若有以下程序 #include <iostream> using namespace std; class A { public: A(int i,int j) { a=i; b=j; } void move(int x, int y) { a+=x; b+=y; } void show( ) { cout < <a < <" , " <<b<< end1; } private: int a,b; }; class B : private A { public: B(int i,int j) :A(i,j) {} void fun ( ) { move (3, 5); } void f1 ( ) { A::show( ); } }; int main ( ) { B d(3,4); d. fun ( ); d.f1( ); return 0; } 程序执行后的输出结果是 ( )。
A. 3,4
B. 6,8
C. 6,9
D. 4,3