下面程序段的输出结果是( )。 public class Test { public static void main (String[] args) { int n=10; do { System.out.println("n is"+n); }while(--n>10); } }
A.n is 8
B.没有输出
C.n is 10
D.n is 9
第1题:
下面程序运行时输出结果为【 】。
include<iostream.h>
include<malloc.h>
class Rect
{
public:
Rect(int1,int w)(length=1;width=w;)
void Print(){cout<<"Area:"<<length *width<<endl;)
void *operator new(size-t size){return malloc(size);}
void operator delete(void *p){free(p)
private:
int length,width;
};
void main()
{
Rect*p;
p=new Rect(5,4);
p->Print();
delete p;
}
第2题:
下面程序段中的错误语句是 ______。 class M{ int i; public: void ~AA(int); AA *p; void AA(); void AA(int x){i=x;}; };
A.AA *p;
B.void ~AA(int);
C.void AA(int);
D.void AA(int x){i=x;};
第3题:
程序的输出结果是【 】。
include <iostream>
using namespace std;
class A{
int x;
public:
A(int x=1):x(x){cout<<x;}
};
void main(){
A a,b(2),c(3);
}
第4题:
第5题:
下面程序的结果是 #include<iostream.h> class test{ private: int num; public: test( ); int getint( ) {return num;} ~test( );}; test::test( ) { num=0;} test::~test( ) { cout<<"Destructor is active"<<endl;} void
A.Exiting main Destructor is active Destructor is active Destructor is active
B.Exiting main Destructor is active Destructoris active
C.Exiting main Destructoris active
D.Exiting main
第6题:
下面程序的输出结果是【 】。
include <iostream>
using namespace std;
class base
{
protected:
int a;
public:
base(){cout<<"0":}
};
class basel: virtual public base
{
public:
base1(){ cout<<"1";}
};
class base2 : virtual public base
{
public:
base2(){cout<<"2";}
};
class derived : public base1,public base2
{
public:
derived () {cout<<"3"; }
}
int main ()
{
derived obj;
cout<<end1;
return 0;
}
第7题:
下面程序的输出结果是( )。 #include <iostream> using namespace std; class A { public: A( ) {cout<<"A";} } class B { public: B() {coat<<"B" ;} } class C: public A { public: B b; C() {cout<<"C";} } void mian(){ C c; }
A.CBA
B.ABC
C.ACB
D.BCA
第8题:
下列程序的运行结果是【 】。
include <iostream. h>
class SomeClass
{
public:
SomeClass(int value) { some_value=value;};
void show_data(void) { cout<<data<<"<<~some_value<<endl; };
static void set_data(int value) {data=value; }
private:
static int data;
int some_value
};
int SomeClass::data
void main(void)
{
SomeClass my_class(1001),your_class(2002);
your_class. set_data(4004);
my_elass. show_data()
}
第9题:
第10题:
14、下面程序段执行后的输出是 。 public class Array____Ex { public static void main(String[] args) { int[] a=new int[1]; modify(a); System.out.println("a[0]="+a[0]); } public static void modify(int[] a) { a[0]++; } }