更多"下列程序的执行结果是 【12】 。#include<iostream."的相关试题:
[填空题]下列程序的执行结果是 【12】 。
#include<iostream. h>
class Studentpublic:
Student(int xx)x=xx;
virtual float calcFuition( );
protected:
int x;float Student:: calcTuition( ) return float(x* x)
class GraduateStudent:public Studentpublic:
GraduateStudent(int xx) :Student(xx)
float calcTuition( )
;
float GraduateStudent:: calcTuition( ) return float(x * 2);void main( ) Student s(20);
GraduateStudent gs(30);
cout<<s.calcTuition( )<<" "<<gs. calcTuition( )==end1;
//计算学生s和研究生gs的学费
[单项选择]下列程序执行的结果是( )。
public class Test
public static void main(String[ ] args)
int i, j, k;
for(int n=100; n<=200; n++ )
i = n/100;
j = n/10-i* 10;
k = n%10;
if(n == Math. pow(i, 3) + Math. pow(j, 3) + Math. pow(k, 3))
System. out. println(n);
A. 153
B. 167
C. 173
D. 137
[单项选择]下列程序执行结果是
#include <iostream.h>
class A
public:
int a;
A( ):a(10)cout<<a<<endl;
;
void main( )
A obj1;
A obj2(obj1);
cout<<" "<<obj2.a<<endl;
A. 10 10
B. 编译错误缺少拷贝构造函数
C. 10随机数
D. 随机数随机数
[单项选择]下列程序的执行结果是 public class Testff public static void main(String args[]) String sl=new String("I am boy"); String s2=new String("I am boy"); System.out.println(sl==s2);
A. true
B. false
C. "I am boy"
D. 都不正确
[单项选择]下列程序的执行结果是 public class Testhh public static void main(String args [] ) Strings1=new String("I am boy"); Strings2=new String("I am boy"); System.out.println(s1.equals(s2));
A. true
B. false
C. I am boy
D. 都不正确
[单项选择]下列程序的执行结果是 ( )
public class Test
public int aMethod( )
satic int i=0;
i++;
System.out.println(i);
public static void.main(String args[])
Test test=new Test( );
test.aMethod( );
A. 编译错误
B. 0
C. 1
D. 运行成功,但不输出
[单项选择]以下程序执行结果是 ( )。
#include <iostream.h>
class Base
public
virtual void fun( ) cout<<"B";
;
class Derived
public:
Derived( ) cout<<"D";
virtual void fun( ) Base::fun( ); cout<<"C";
int main ( )
Base *ptr;
Derived obj;
ptr=&obj;
p->fun ( );
return 0;
A. DBC
B. DCB
C. BDC
D. CBD
[单项选择]下面程序执行后,输出的结果是( )。 public class Test { public static void main (String[] )args) { boolean m=true; if(m==false) System.out.println("假"); else if(m====true) System.out.println("真"); else System.out.println ("错误"); } }
A. 真
B. 假
C. 错误
D. 编译出错
[单项选择]下列程序的执行结果是 ( )
public class ex68
public static void main(String[]args)
ex68 obj=new ex68( );
int s=0;
for(int i=1;i<=4;i++)
s+=obj.method(i);
System.out.println(s);
public int method(int n)
if(n==1)
return 1;
else
return n*method(n-1);
A. 3
B. 9
C. 33
D. 153
[单项选择]下列程序的执行结果是( )。
public class ex68
public static void main(String[] args)
ex68 obj=new ex680;
int s=0;
for(int i=1; i<=4; i++)
s+=obj.method(i);
System.out.println(s);
public int method(int n)
if(n==1)
return 1;
else
tatum n * method(n-1);
A. 3
B. 9
C. 33
D. 153
[单项选择]以下程序执行后的输出结果是 ( )。
#include <iostream.h>
class Basel
public:
void fun( ) cout<<"Basel"<<end1;
;
class Base2
public:
void fun( ) cout<<"Base2"<<end1;
class Derived : public Basel,public Base2
;
void main( )
Derived Obj;
Obj.fun( );
A. Basel
B. Base2
C. BaselBase2
D. 程序产生二义性