更多"请在如下程序中的空格处填写正确的语句: #include <iost"的相关试题:
[填空题]请在如下程序中的空格处填写正确的语句:
#include <iostream>
using namespace std;
class Base {
public:
void fun( ) {cout<<"Base fun"<<endl; }
};
class Derived: public Base {
public:
void fun( ) {
【11】 ; //调用基类的函数fun( )
cout<<"Derived fun "<<endl;
}
};
[填空题]请在如下程序中的空格处填写正确的语句;
#include<iostream>
using namespaee std;
c]ass Base
public:
void fun( )cout<<"Base fun"<<endl;
;
class Derived:public Base
public:
void fun( )
______//调用基类的函数fun( )
cout<<"Derived fun"<<endl;
;
[填空题]请在下列程序的横线处填写正确的语句。
#include<iostream>
using namespace std;
class Base
public:
void fun( )cout<<"Base fun"<<endl;
;
class Derivde:public Base
public:
void fun( )
______∥ 调用基类的函数fun( )
cout<<"Derived fun"<<endl;
;
[单项选择]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){cout<<m;}
Derived(int m):y(m){cout<<m;}
};
int main( ){
Derived d1(3),d2(5,7)
return 0;
}
运行时的输出结果是
A. 375
B. 357
C. 0375
D. 0357
[单项选择]有如下程序: #include<iostream> using namespace std; class Base { protected: in i; public: int j; }; class Derived:public Base { int m; public:int n; }; int main( ) { Derived d; d.i=0; //[1] d.j=0; //[2] d.m=0; //[3] d.n=0; //[4] retum 0; } 其中主函数中有两个赋值语句有错,这两个借误的赋值语句是
A. [1]和[2]
B. [1]和[3]
C. [2]和[3]
D. [2]和[4]
[填空题]请在下列程序中的横线处填写正确的语句。
#include<iostream>
using namespace std;
class Base
public:
void fun( )cout<<"Base fun"<<endl;
;
class Derivde:public Base
public:
void fun( )
______// 调用基类的函数fun( )
cout<<"Derived fun"<<endl;
;
[单项选择]有如下程序
#include <iostream>
using namespace std;
class base
public:
virtual void f1( )
cout<<"F1Base";
virtual void f2( )
cout<<"F2Base";
;
class derive: public base
void f1( )
cout<<"F1Derive";
void f2(intx)
cout<<"F2Derive";
;
int main( )
base obj1,*p;
derive obj2;
p=&obj2;
p->f1( );
p->f2( );
return 0;
执行后的输出结果是( )。
A. F1Derive F2Base
B. F1Derive F2Derive
C. F1Base F2Base
D. F1Base F2Derive