更多"下列程序中划线处正确的语句是( )。 # include <ios"的相关试题:
[单项选择]下列程序中划线处正确的语句是( )。
#include <iostream>
using namespace std;
class Basepublic:
void fun( ) cout<<"Base:: fun"<<end1;
;
class Derived: public Base void fun( )
_______________________ //显试调用基类的函数 fun( )
cout <<"Derived:: fun"<<end1;
;
A. fun();
B. Base. fun();
C. Base:: fun();
D. Base->fun();
[单项选择]下列程序中划线处正确的语句是( )。
# include <iostream>
using namespace std;
class Base
public:
void fun( )cout<<"Base:: fun" <<endl;
;
class Derived:public Base
void fun( )
______ ∥显式调用基类的函数fun( )
cout<<"Derived:: fun"<<endl;
;
A. fun();
B. Base.fun();
C. Base::fun();
D. Base- >fun();
[单项选择]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(;}
[单项选择]下列程序中,划线处正确的语句是( )。
#include<iostream.h>
Class Base
Public:
Void fun( )cout<<"Base::fun"<<endl;
;
Class Derived:public Base
void fun( )
______ //显示调用基类的函数fun( )
Cout<<"Derived::fun"<<endl;
;
A. fun()
B. Base.fun()
C. Base::fun()
D. Base->fun();
[单项选择]下列程序中,划线处正确的语句是( )。
#include<iostream.h>
Class Base
Public:
Void fun( )cout<<"Base::fun"<<endl;
;
Class Derived:public Base
void fun( )
______ //显示调用基类的函数fun( )
Cout<<"Derived::fun"<<endl;
;
A. fun()
B. Base.fun()
C. Base::fun()
D. Base->fun();
[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;
;
[填空题]下列程序中需要清理动态分配的数组,划线处应有的语句是 【13】 。
#include<iostream, h>
class person int age, tall;
public:
person( ) age= 0; tall= 40; cout<<"A baby is born. "<<end1;
person(int i) age=i, tall=40, cout<<"A old person. "<<end1;
person(int i, int i) age = i; tall = j; cout <<" a old person with tall. "<<
end1;
~person( ) cout<<" person dead. "<<end 1;
void show( )
cout<<"age= "<<age<<" ,tall= "<<tall<<end1;
;
void main( ) person * ptr;
ptr = new person[3];
ptr[0]=person ( )
ptr[1]=person(18);
ptr[2]=person(20,120);
for(int i=0;i<3; i++)
ptr[i]. show( );
______
[单项选择]下列程序中横线处正确的语句是( )。 #include<iostream> using namespace std; class TestClass { public: void fun( ){cout<<"TestClass::fun"<<end1;} }; class TestClass1:public TestClass { void fun( ) { ______//显示调用基类的函数 fun( ) cout<<"TestClass1::fun"<<end1; } };
A. fun();
B. TestClass.fun()
C. TestClass::fun();
D. TestClass->fun();
[填空题]在下面横线上填上适当的语句,完成程序。
#include <iostream>
using namespace std;
class Base
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;
在横线处应填入的语句是 【11】 。