阅读如下代码:public class X5_3_3 extends Hide {int x = 200;public static void main(Stri
A.100
B.200
C.程序错误
D.300
A.100
B.200
C.程序错误
D.300
A.1
B.2
C.2.5
D.3
A.B::B(int m) : a(m), z(m){ }
B.B::B(int m) : a(),z() { }
C.B::B(int m) : a(m,m), z(m){ }
D.B::B(int m) : a=(m,m), z=m { }
A.A::A(int x,int y):y(y){x=x;};
B.A::A(int x,int y):x(x){y=y;};
C.A::A(int x,int y):y(y){this->x=x;};
D.A::A(int x,int y):x(x){this->y=y;};
A.55 66
B.66 55
C.66 48
D.55 48
A.0
B.1
C.2
D.4
阅读下面程序,写出输出结果。
#include using namespace std ; class A { int a, b; public : A() { a = b = 0; }
A(int aa, int bb) { a = aa; b = bb; cout << a << ' ' << b << endl ; } }; int main() { A x, y(2,3);
return 0; }
public class Test{//do something...}
B.import java.io.*;
package testpackage;
public class Test{// do something...}
C.import java.io.*;
class Person{// do something...}
public class Test{// do something...}
D.import java.io.*;
import java.awt.*;
public class Test{// do something...}
A.上述三个a方法是方法重载
B.上述三个a方法是方法重写
C.上面代码编译通不过
D.上述三个方法是第一个和第二个a方法是方法的重写,第三个a方法编译会有问题
A.abstract class Cat: Animal
{
abstract public void Move();
}
B.abstract class Cat: Animal
{
virtual public void Move(){Console.Write(Console.Write("Move!");)}
}
C.abstract class Cat: Animal
{
public void Move(){Console.Write(Console.Write("Move!");)};
}
D.abstract class Cat: Animal
{
public void Eat(){Console.Write(Console.Write("Eat!");)};
}
A.9
B.5
C.6
D.6.1
A.Writeline(“a={0},b={1}”,a,b);}}的输出结果是()
B.a=2,b=1
C.a=1,b=1
D.a=1,b=0
E.a=2,b=2