#include< iostream.h>

   class Class

   {

    public:

       void print(int a,int b) {

          cout<<″int:″<< a<< endl;

          cout<<″int:″<< b<< endl;

     }

       void print(char * a,char * b) {

          cout<<″string:″<

          cout<<″ string:″<

     }

       void print(char * a,unsigned int b){

          cout<<″string:″<

          cout<<″int:″<

     }

   };

    void main( )

   {

       Class cls;

       cls.print(10,20);

       cls.print(′c′,1);

       cls.print(′x′,′y′);

       cls.print(″Hello!″,0);

   }

利用LOCATION类，使用继承定义圆类CIRCLE，圆由圆心和半径构成。提供得到圆心坐标和半径的成员函数、以及计算圆的周长和面积的成员函数。在主程序中创建两个圆A和B，圆心坐标分别为（0，3）、（3，7），按如下格式输出两个圆的圆心坐标、周长和面积，并计算和输出两个圆的圆心之间的距离。

A：（x1，y1，r1），Girth=g1，Area=a1

B：（x2，y2，r2），Girth=g2，Area=a2

A（x1，y1），B（x2，y2），Distance=d

定义LOCATION类，该类没有“继承”等现象。注意二维坐标点之间的距离公式。

class LOCATION{

double x,y;

public:virtual double getx( )const{return x;};

virtual double gety( )const{return y;};

virtual double dist(LOCATION &s)const;

LOCATION(double x, double y):x(x), y(y){ };};

double LOCATION:: dist(LOCATION ＆s)const{

double xd=s.x-x, yd=s.y-y;

return sqrt(xd*xd+yd*yd);}

  #include< iostream.h >

   class A

   {

    public:

      A( );

       void Show( ) ;

      ~A( );

    private:

       static int c;

    };

   int A::c =0;

   A::A( )

   {

       cout<<″constructor.″<

       c+ =10;

   }

   void A: :Show( )

   {

       cout<<″c=″<

   }

   A::~A( )

   {

       cout<<″destructor.″<

   }

    void main( )

   {

       A a, b;

       a.Show( );

       b.Show( );

   }

下列程序的运行结果如下:

x=22，y=22

根据结果将程序补充完整。

  #include

  template<__________>

  void f(__________)

  {

    if(sizeof(T1)>sizeof(T2))

        x=(T1)y;

    else

        y=(T2)x;

  }

  void main( ){

    double x=134.2;

    int y=22;

    f(x,y);

    cout<<″x=″<

  }

请给出下面程序的输出结果

  #include< iostream.h >

  class Class

  {

    public:

       static int var;

     Class( )

       {

          var+ +;

     }

   };

   int Class::var = 0;

   void main( )

   {

       cout<<″Class::var =″<

       Class c1 ;

       cout<<″c1. var=″<

       Class c2, c3 ;

       cout<<″c2. var =″<

   }

将下面程序补充完整，使程序正确的初始化私有变量var及释放资源。

  class Class

  {

  private:

    int * var;

  public:

    Class(int num);

    ～Class( );

  };

  Class::Class(int num)

  {

     ___________;

  }

  Class::～Class( )

  {

     ___________;

  }

将下面程序补充完整，使程序的输出结果为:

ClassA::Print

ClassB::Print

程序如下：

  #include

  class Base

  {

    public:

    virtual void Print( ) const {

      cout<<″Base::Print″<

    }

  };

  class ClassA:public Base

  {

  public:

    void Print( )const{cout<<″ClassA::Print″<

  };

  class ClassB:public Base

  {

  public:

    void Print( )const{cout<<″ClassB::Print″<

  };

  void Print(__________)

  {

    __________;

  }

  void main( )

  {

    ClassA a;

    ClassB b;

    Print(a);

    Print(b);

  }

将下面程序补充完整，使程序执行结果为9。

  #include

  class Class{

  public:

  __________{

     x=a;

    }

    __________{

      return x * x;

    }

  private:

    int x;

  };

  void main( )

  {

    Class a(3);

    cout<

  }

将下面程序补充完整，使程序计算100以内所有可被7整除的自然数之和。

  #include

  void main( )

  {

    int x=1;

    int sum=0;

    while(true)

    {

    if(x>100){

     __________;

    }

     if(__________){

     sum=sum+x;

     }

     x++;

    }

    cout<

  }

 #include

  class A

  {

    unsigned char var;

  public:

    A(unsigned char x){

    var=x:

    }

    void print( ){

    cout<<″var=″<

    }

    };

    void main( )

    {

       A a(″x″);

       a. print( );

   }

  #include< iostream.h >

   class Class

   {

     private:

        int val;

     public:

        void func( int a)

     {

           val = a;

     }

   };

   void main( )

   {

        Class * cls ;

        cls ->func(10) ;

   }