Array pro and Data pro and Function pro using in c++

Illustrate array of objects in classes in C++ Programming

 #include

 #include

/*************************************************************************///------------------------------  distance  -----------------------------///*************************************************************************/

class distance

    {

      private:

        int feet;

        float inches;

      public:

        void getdistance();

        void showdistance();

    };

/*************************************************************************///---------------------------  getdistance( )  -------------------------///*************************************************************************/

void distance::getdistance()

    {

       cout<<"\t Enter feet = ";

       cin>>feet;

       cout<<"\t Enter inches = ";

       cin>>inches;

    }

/*************************************************************************///---------------------------  showdistance( )  -----------------------///*************************************************************************/

void distance::showdistance()

    {

       cout<<"\n\t Total distance is "<"\' "<'"'<

    }

int main()

    {

       clrscr();

       distance obj[25];

       char ans;

       int n=0;

       do

      {

         cout<<"\n Enter the distance number = "<

         obj[n++].getdistance();

         cout<<"\n  Enter another (y/n)?";

         cin>>ans;

      }

       while(ans!='n');

       for(int i=0;i

      {

         cout<<"\n Distance number "<" is :";

         obj[i].showdistance();

      }

       getch();

       return 0;

    }

Class and objects using private and public data members in C++

#include

#include

class data

{

    int day;

    int month;

    int year;

    public:

    void date(int dd,int mm,int yy)

    {

        day=dd;

        month=mm;

        year=yy;

        cout<<"\t"<

        cout<<"\t"<

        cout<<"\t"<

    }

};

int main()

{

    clrscr();

    data f1,f2;

    f1.date(7,12,2002);

    f2.date(8,12,2002);

    f1.date(12,12,2002);

}

Pointer to Function 

#include

#include

int main()

{

   double y(), cos(), table();

   table (y,0.0,2.0,0.5);

   table (cos,0.0,3.1415,0.5);

}

double (double (*f)(),min,max,step;)

  {

      double a, value;

      for (a=min;a,=max; a+=step)

      {

          value = (*f)(a);

          printf("%5.2f %10.4f\n",a,value);} 

       }

    double y (double x) 

    {

return (2*x*x-x+1);

}