程序: class TestApp{ public static void main (String[] args){ int x=6; if (x>l) System. out. println("x>l"); else if (x>5) System. out .println("x>5"); else if (x<10) System. out. println("x
第1题:
有以下程序:
include<iostream>
using namespace std;
class Base
{
public:
Base()
{
K=0;
}
int x;
};
class Derivedl:virtual public Base
{
public:
Derivedl()
{
x=10;
}
};
class Derived2:virtua1 public Base
第2题:
有如下程序: #include <iostream.h> class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<a; } }; class x2 : virtual public x { public: x2() { a+=2; cout<<a; } }; class y : public xl,public x2 { public: y() { cout<<a<<end1; } }; int main() { y obj; return O; } 该程序运行后的输出结果是( )。
A.1
B.123
C.242
D.244
第3题:
下列程序片段中,能通过编译的是
A.public abstract class Animal{ public void speak();}
B.public abstract class Animal{ public void speak(){}}
C.public class Animal{ public abstract void speak();}
D.public abstract class Animal{ public abstract void speak(){}}
第4题:
程序: class TestApp{ public static void main(String[] args){ System.out.println(multiply(2,3,4,5)); } public int multiply(int[] nums){ int result = 1; for(int x :nums) result *= x; return result; } } 程序运行后的输出是哪项?()
第5题:
以下程序的执行结果为______。
include<iostream.h>
class A
{public:A(){cout<<“a”;}
~A(){cout<<“b”;}};
class B:public A
{public:
B(){cout<<“c”;)
~B(){cout<<“d”;}};
void main()
{B b;}
第6题:
有下列程序:
include<iostream>
using namespace std;
class ONE
{
public:
virtual void f(){COUt<<"1";}
};
c1assTWO:public ONE
{
public:
TWO(){cout<<"2";}
};
class THREE:public TWO
{
pub
第7题:
下列程序片段中,能通过编译的是( )。
A.public abstract class Animal{ public void speak;}
B.public abstract class Animal{ public void speak{);}
C.public class Animal{ pubilc abstract void speak;}
D.public abstract class Animal{ pubile abstract void speak{};}
第8题:
以下程序的执行结果为______。
include<iostream>
using namespace std;
class base
{
public:
virtual void who()
{
cout<<"base class"<<endl;
}
};
class derivel:public base
{
public:
void who()
{
cout<<"d
第9题:
程序: class TestApp{ public static void main(String[] args){ for(int i=0;i<5;i++) System.out.print(i+1); System.out.println(i); } } 上述程序运行后的结果是哪项?()
第10题:
程序: class TestApp{ public static void main() String[] args){ for(int i=0;i<10;i++){ if(i==3) break; 当循环到3时,自动跳出 System.out.print(i); } } } 程序运行后的输出是哪项?()