课程《面向对象程序设计》_题库列表第98页_查题网

面向对象程序设计

截止11-07，该科目累计收录道题目。

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写出下面程序的执行结果：#include<iostream.h>class AA{int a;public :AA(int i){a=i;cout<<"AA="<<a<<" ";}virtual ~AA( ){cout<<"~AA="<<a<<" ";}};class BB:public AA{int b;public :BB(int i,int j):AA(i){b=j;cout<<"BB="<<b<<" ";}~BB( ){cout<<"~BB="<<b<<" ";}};void main( ){AA *pa=new AA(8); delete pa;AA*pb=new BB(6,9); delete pb;}
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- 2021-11-04 07:18:19
写出下面程序的执行结果：#include<iostream.h>class A{public : A( ){} virtual void f( ){cout<<"A::f( )iscalleD. ";}};class B:public A{ public : B( ){f( );} void g( ){f( );}};class C:public B{ public : C( ){} virtual void f( ){cout<<"C::f( )is called.\n";}};void main( ){Cc;C.g( );}
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- 2021-11-04 07:18:19
C 的流库预定义了4个流，他们分别是什么？
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- 2021-11-04 07:17:19
#include<iostream.h>class A{public: virtual void pr(){cout<<"1"<<endl;}};class B:public A{ void pr(){cout<<"2"<<endl;}};void p1(A&a){a.pr();}void p2(A a){a.pr();}void main(){ B b; p1(b); p2(b);}
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- 2021-11-04 07:17:19
写出下面程序的执行结果：#include<iostream.h>class A{ int a,b; 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<<") ";} };class B:public A{ int x,y;public : B(int i,int j,int k,int l):A(i,j),x(k),y(l){} void show( ){cout<<x<<","<<y<<endl;} void fun( ){ move(3,5);} void f1( ){ A::show( ); }};void main( ){Ae(1,2);e.show( );Bd(3,4,5,6); D.fun( ); D.A::show( );D.B::show( ); D.f1( ); }
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- 2021-11-04 07:17:19
写出下面程序的执行结果：#include<iostream.h>class B{protected: int b;public : B(int i){b=i 50;show( );} B( ){} virtual void show( ){cout<<"B::show( ) is called.b="<<b<<endl;}};class D:public B{ protected: int d;public : D(int i):B(i){d=i 100;show( );} D( ){} void show( ){cout<<"D::show( )iscalleD.d="<<d<<endl;}};void main( ){D d1(108);}
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- 2021-11-04 07:16:19
写出下面程序的执行结果：#include<iostream.h>class AA{int a;public :AA( ){cout<<"Initualizing AA! ";}~AA( ){cout<<"Destroying AA! ";};class BB{int b;AA p;public :BB( ){cout<<"Initualizing BB! ";}~BB( ){cout<<"Destroying BB! ";};void main( ){BB X;cout<<"Ending main! ";}
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- 2021-11-04 07:16:19
编写C 程序一般需经过的步骤是什么？
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- 2021-11-04 07:16:19
写出下面程序的执行结果：#include<iostream.h>class A{private: int a,b;public : A( ); A(int i,int j); void print ( );};A::A( ){ a=b=0; cout<<"Default constructor is called. "; }A::A(int i,int j){ a=i; b=j; cout<<"Constructor is called. "; }void A::print ( ){ cout<<"a="<<a<<","<<"b="<<b<<endl; }void main( ){ Am,n(4,8); m.print ( ); n.print ( ); }
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- 2021-11-04 07:14:19
#include<iostream.h>class A{public: A(int i=0){a=i;} void print(){cout<<A<<',';}private: int a;}; class B:public A{public: B(){b1=b2=0;} B(int i){b1=i;b2=0;} B(int i,int j,int k):A(i),b1(j),b2(k){} void print(){A::print();cout<<B1<<','<<B2<<endl;}private: int b1,b2;}; void main(){ B d1,d2(5),d3(4,5,6); d1.print();d2.print();d3.print();}
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- 2021-11-04 07:14:19