Parrallel array problem

•

What is DaniWeb IT Discussion Community?

You're currently browsing the C++ section within the Software Development category of DaniWeb, a massive community of 455,865 software developers, web developers, Internet marketers, and tech gurus who are all enthusiastic about making contacts, networking, and learning from each other. In fact, there are 3,649 IT professionals currently interacting right now! Registration is free, only takes a minute and lets you enjoy all of the interactive features of the site.

Join our community!

Please support our C++ advertiser: Programming Forums

Thread Tools Display Modes

Views: 203 | Replies: 4 | Solved

•

Join Date: Apr 2008

Posts: 22

Reputation: Seamus McCarthy is an unknown quantity at this point

Rep Power: 1

Solved Threads: 0

Seamus McCarthy Seamus McCarthy is offline

Offline

Newbie Poster

Parrallel array problem

Jul 16th, 2008

 Help with Code Tags 
 cplusplus Syntax (Toggle Plain Text) 
#include <iostream>
using namespace std;
const int capacity = 20;
string tax_payers[capacity] = {"jane", "tom", "jerry", "joe", "annie", "mary", "kate", "steve", "sarah", "paul", "petra", "peter","elaine", "noreen", "sean", "niamh", "donal", "john", "marie", "colin"};
double income[capacity] = {21000.0, 16500.0, 120000.0, 16000.0, 38000.0, 62500.0, 14500.0, 28500.0, 13500.0, 27500.0, 15000.0, 44000.0, 18000.0, 21000.0, 150000.0, 15500.0, 40000.0, 21000.0, 25000.0, 37500.0};
void swap(int &j, int &k);
int spaces = 25;
int main()
{
 
    cout << "\t" << "Sorted list" << endl;
 
    for (int j = 0; j <  capacity-1; j++)
    for(int  i = 0; i <  capacity-1; i++)
    {
   		if (income[i] < income[i+1])
   		   swap(income[i],income[i+1]);
    }
 
    for(int  i = 0; i < capacity; i++)
    cout << "\t" << tax_payers[i] <<" " << "\t" << income[i] << endl;;
 
    cout << "\n";
 
    cout << "\t" << "Under 25000"<< endl;
 
	for(int i=0;i<capacity;i++)
	{
		if(income[i] < 25000)
		cout << "\t"<< tax_payers[i] << "\n ";
 
	}
 
	cout << "\n";
 
    cout << "\t" << "Over 25000" << endl;
 
	for(int i=0;i<capacity;i++)
	{
		if(income[i] > 25000)
		cout << "\t" << tax_payers[i] << "\n ";
 
	}
return 0;
 
}
 
void swap( int &j, int &k )
 {
    int tmp = j;
    j = k;
    k = tmp;
 }
#include <iostream>
using namespace std;
const int capacity = 20;
string tax_payers[capacity] = {"jane", "tom", "jerry", "joe", "annie", "mary", "kate", "steve", "sarah", "paul", "petra", "peter","elaine", "noreen", "sean", "niamh", "donal", "john", "marie", "colin"};
double income[capacity] = {21000.0, 16500.0, 120000.0, 16000.0, 38000.0, 62500.0, 14500.0, 28500.0, 13500.0, 27500.0, 15000.0, 44000.0, 18000.0, 21000.0, 150000.0, 15500.0, 40000.0, 21000.0, 25000.0, 37500.0};
void swap(int &j, int &k);
int spaces = 25;
int main()
{

    cout << "\t" << "Sorted list" << endl;

    for (int j = 0; j <  capacity-1; j++)
    for(int  i = 0; i <  capacity-1; i++)
    {
   		if (income[i] < income[i+1])
   		   swap(income[i],income[i+1]);
    }
        
    for(int  i = 0; i < capacity; i++)
    cout << "\t" << tax_payers[i] <<" " << "\t" << income[i] << endl;;

    cout << "\n";
    
    cout << "\t" << "Under 25000"<< endl;
	
	for(int i=0;i<capacity;i++)
	{
		if(income[i] < 25000)
		cout << "\t"<< tax_payers[i] << "\n ";
	
	}
	
	cout << "\n";
	
    cout << "\t" << "Over 25000" << endl;
	
	for(int i=0;i<capacity;i++)
	{
		if(income[i] > 25000)
		cout << "\t" << tax_payers[i] << "\n ";
	
	}
return 0;

}

void swap( int &j, int &k )
 {
    int tmp = j;
    j = k;
    k = tmp;
 }

Sorry bout early post, went wrong my bad. I jst need help to assign the right tax payer and income to the right person for example sean shud b 150000 and not jane, she shud b assigned 21000. Any ideas why it is doin that??

Last edited by Narue : Jul 16th, 2008 at 2:44 pm. Reason: Fixed code tags

•

Join Date: Mar 2005

Location: Phnom Penh, Cambodia

Posts: 415

Reputation: invisal will become famous soon enough

Rep Power: 5

Solved Threads: 36

invisal

Offline

Posting Pro in Training

Re: Parrallel array problem

Jul 16th, 2008

You have sorted your income array and that is the reason why.

Yesterday is a history, tomorrow is a mystery, today is a gift.
Behind every smile is a tear.
Visal .In

•

Join Date: Apr 2008

Posts: 22

Reputation: Seamus McCarthy is an unknown quantity at this point

Rep Power: 1

Solved Threads: 0

Seamus McCarthy Seamus McCarthy is offline

Offline

Newbie Poster

Re: Parrallel array problem

Jul 16th, 2008

Ya i understand what you are sayin, but i tried this
V
if (tax_payers[i] < tax_payers[i+1])
swap(tax_payers[i],tax_payers[i+1]);
after the first if statement but still doesn't assignin them right, did i set up the parallel arrays wrong or something??

•

Join Date: Mar 2005

Location: Phnom Penh, Cambodia

Posts: 415

Reputation: invisal will become famous soon enough

Rep Power: 5

Solved Threads: 36

invisal

Offline

Posting Pro in Training

Re: Parrallel array problem

Jul 16th, 2008

I haven't read all of your code because it is hard to read wihtout code tag. However, I think your sort should be in this way:

 Help with Code Tags 
 cplusplus Syntax (Toggle Plain Text) 
string temp;
 
for (int j = 0; j < capacity-1; j++) {
  for(int i = 0; i < capacity-1; i++) {
     if (income[i] < income[i+1]) {
         swap(income[i],income[i+1]);
         temp = tax_payers[i];
         tax_payers[i] = tax_payers[i+1];
         tax_payers[i+1] = temp;
     }
  }
}
string temp;

for (int j = 0; j < capacity-1; j++) {
  for(int i = 0; i < capacity-1; i++) {
     if (income[i] < income[i+1]) {
         swap(income[i],income[i+1]);
         temp = tax_payers[i];
         tax_payers[i] = tax_payers[i+1];
         tax_payers[i+1] = temp;
     }
  }
}

When you sort your income array, the oringinal order of income will probally be changed. To keep it parrallel to the tax payers, you need to change the tax payers order too.