更多"下列程序中,划线处正确的语句是( )。 #include<iost"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.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]为使该程序执行结果为10,那么应该在程序划线处填入的语句是( )。 #include<iostream> using namespace std; class MyClass { public: MyClass (int a) { x=a; } ___________ //取x值 private: int x; }; int main( ) { MyClass my(10); cout<<my.GetNum( )<<end1; return 0; }
A. return x;
B. int GetNum(){ return x;}
C. intreturn x;
D. void GetNum(){return x;}
[单项选择]在下列程序的划线处应填入的语句是 ( )
class Person
private int a;
public class Man extends Person
public int b
public static void main(String arg[])
Person P=new Person( );
Man t=new Man( );
int i;
______
A. i=w;
B. i=b;
C. i=p.a;
D. i=t,b;
[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]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]在下列程序的划线处应填入的语句是( )。 class Person private int a: public class Man extends Person public int b; public static void main(String arg []) Person p=newPerson( ); Man t=new Man( ); int i; _________________
A. i=w;
B. i=b;
C. i=P.a;
D. i=t.b;
[单项选择]在下列程序的划线处应填入的语句是
class Person
private int a;public class Man extends Person
public int b;
public static void main (String arg [])
Person p=new Person( );
Man t=new Man( );
int i:
A. i=w;
B. i=b
C. i=p.a;
D. i=t.b;
[单项选择]
在下列程序的划线处应填入的语句是()。
class Pemon
pnvate int a;
public class Man extends Person
public int b;
public static void main(String arg[ ] )
Person p = new Person( );
Man t = new Man( );
int i;
________
A. i = w;
B. i = b;
C. i = p.a;
D. i = t.b;
[填空题]下列程序编译错误,是由于划线处缺少某个语句,该语句是 【15】 。
#include <iostream. h>
class A
______
private:
int numl;
public:
A( ):numl(0)
A(int i):numl(i)
;
class B
private:
int num2
public:
B( ):num2(0)
B(int i):num2(i)
int my_math(A obj1,B obj2);
;
int B::my_math(A obj1,B obj2)
return (obj1.num1+obj2.num2);
void main(void)
A obj1 (4)
B obj,obi2(5);
cout <<"obj1+obj2:"<<obj.my_math(obj1,obj2);
[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]下列程序编译错误,是由于划线处缺少某个语句,该语句是______。
#include<iostream.h>
class A
{
private:
int numl;
public:
A( ):numl(0){}
A(int i):numl(i){}
};
class B
{
private:
int num2;
public:
B( ):num2(0){}
B(int i):num2(i){}
int my_math(A obj1, B obj2);
};
int B::my_math(A obj1,B obj2)
{
return(obj1.numl+obj2.num2);
}
void main(void)
{
A objl(4);
B obj,obj2(5);
cout<<"obj1+obj2:"<<obj.my_math(obj1,obj2);
}
[填空题]下列程序编译错误,是由于划线处缺少某个语句,该语句是______。
#include<iostream.h>
class A
private:
int numl;
public:
A( ):numl(0)
A(int i):numl(i)
;
class B
private:
int num2;
public:
B( ):num2(0)
B(int i):num2(i)
int my_math(A obj1, B obj2);
;
int B::my_math(A obj1,B obj2)
return(obj1.numl+obj2.num2);
void main(void)
A objl(4);
B obj,obj2(5);
cout<<"obj1+obj2:"<<obj.my_math(obj1,obj2);
[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. Derived(int {Base(;}