Solved

class IntegerSet

Posted on 2004-04-13
2
2,250 Views
Last Modified: 2012-08-13
Need help with the missing function definitions.  Please advise.  Del

#ifndef INT_H
#define INT_H

class IntegerSet {

public:

   IntegerSet(int);
   IntegerSet(const IntegerSet &);

   IntegerSet unionOfIntegerSets(const IntegerSet &);
   IntegerSet intersectionOfIntegerSets(const IntegerSet &);

   void emptySet();
   void inputSet();
   void insertElement(int);
   void deleteElement(int);
   void setPrint() const;
   bool isEqualTo(const IntegerSet &) const;

private:

   int *set;
   int size;

   bool validEntry(int x) const
   {
     return x >= 0 && x < size;

   }

};

#endif

// int.cpp

#include <iostream>
#include <iomanip>

using namespace std;

#include "int.h"

IntegerSet::IntegerSet(int s)
{
   size = s;
   set = new int[size];
   /*Need help in writing call to emptySet */ HELP!

}

IntegerSet::IntegerSet(const IntegerSet &init)
{
   size = init.size;
   /*Need help in writing statement to allocate sufficient memory*/ HELP!

   emptySet();

   for(int i = 0; i < size; i++)
      /*Need help in writing statement to copy elements of init*/ HELP!

}

void IntegerSet::emptySet()
{
   /*Need help in writing function definition for emptySet*/ HELP!

}

void IntegerSet::inputSet()
{
   int number;

   do {
     cout << "Enter an element (-1 to end): ";
     cin >> number;

     if(validEntry(number))
       set[number] = 1;

       else if(number != -1)
       cout << "Invalid Element\n";

   } while(number != -1);
     cout << "Entry complete\n";

}

void IntegerSet::setPrint() const
{
   int x = 1;
   bool empty = true;

   cout << '{';

   for(int u = 0; u < size; ++u)
      if(set[u]) {
     cout << setw(4) << u << (x % 10 == 0 ? "\n" : "");
     empty = false;
     ++x;

      }

   if(empty)
     cout << setw(4) << "---";
     cout << setw(4) << "}" << '\n';

}

IntegerSet IntegerSet::unionOfIntegerSets(const IntegerSet &r)
{
   IntegerSet temp(size > r.size ? size : r.size);
   temp.emptySet();

   int iterations = (size < r.size ? size : r.size);

   for(int i = 0; i < iterations; i++)
      if(set[i] == 1 || r.set[i] == 1)
     temp.set[i] = 1;

   return temp;

}

IntegerSet IntegerSet::intersectionOfIntegerSets(const IntegerSet &s)
{
   /*Need help in writing definition for intersectionOfIntegerSets*/ HELP!

}

void IntegerSet::insertElement(int k)
{
   if(validEntry(k))
     set[k] = 1;
   else
     cout << "Invalid insert attempted!\n";

}

void IntegerSet::deleteElement()
{
   /*NEED DEFINITION WRITTEN FOR deleteElement()*/ HELP!

}

void IntegerSet::isEqualTo()
{
   /*NEED DEFINITION WRITTEN FOR isEqualTo()*/ HELP!

}

// int_driver.cpp

#include <iostream>

using namespace std;

int main()
{
   IntegerSet a(101);
   IntegerSet b(101);
   IntegerSet c(101);
   IntegerSet c(101);
   IntegerSet d(101);

   cout << "Enter set A:\n";
   a.inputSet();
   cout << "\nEnter set B:\n";
   b.inputSet();

   /*NEED WRITTEN CALL TO unionOfIntegerSets FOR OBJECT a PASSING IT b;
     ASSIGN THE RESULT TO d*/ HELP!!

   /*NEED WRITTEN CALL TO intersectionOfIntegerSets FOR OBJECT a PASSING
     IT b; ASSIGN THE RESULT TO d*/ HELP!!

   cout << "\nUnion Of A and B is:\n";
   c.setPrint();
   cout << "Intersection of A and B is:\n";
   d.setPrint();

   if(a.isEqualTo(b))
     cout << "Set A is equal to set B\n";
   else
     cout << "Set A is not equal to set B\n";

   cout << "\nInserting 77 into set A...\n";
   a.insertElement(77);
   cout << "Set A is now:\n";
   a.setPrint();

   cout << "\nDeleting 77 from set A...\n";
   a.deleteElement(77);
   cout << "Set A is now:\n";
   a.setPrint();

   cout << endl;

   return 0;

}
0
Comment
Question by:edelossantos
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 

Author Comment

by:edelossantos
ID: 10819719
Anyone have any ideas?
0
 
LVL 4

Accepted Solution

by:
bkfirebird earned 500 total points
ID: 10819934
here's something to start .....
IntegerSet::IntegerSet(int s)
{
   size = s;
   set = new int[size];
   emptySet();
}

IntegerSet::IntegerSet(const IntegerSet &init)
{
   size = init.size;
   set = new int[size];
   emptySet();

   for(int i = 0; i < size; i++)
     set [i] = init.set [i];
}

try writing some of the missing functions yourself ... they are not so difficult ... start working on emptySet
the idea of EE is to help you figure, not to give the final solution
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question