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Oct 11th, 2008

charting using for loops??

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im making a program where i will displaying the sales of each store using a sales bar chart.

user will input sales for each store.

after the input, a sales chart must be displayed using a for loop, with each '*' = $100 in sales

question: how can i make the * worth $100 so when ie: sales are $400 for the day, 4 * will be displayed? this is the trouble i am having with my for loop!

this is what i have so far.

C++ Syntax (Toggle Plain Text)
#include <iostream>
using namespace std;
 
int main()
{
	double sale1, sale2, sale3, sale4, sale5;
	double total;
	int row;
 
	cout << "Enter today's sale for store 1: ";
	cin >> sale1;
	cout << "Enter today's sale for store 2: ";
	cin >> sale2;
	cout << "Enter today's sale for store 3: ";
	cin >> sale3;
	cout << "Enter today's sale for store 4: ";
	cin >> sale4;
	cout << "Enter today's sale for store 5: ";
	cin >> sale5;
 
	cout << endl;
	cout << "SALES BAR CHART" << endl;
 
	for (row = 0; row < 5; row++)
	{
 
	cout << '*';	
	cout << endl;
 
	}
 
 
 
 
	return 0;
}
#include <iostream>
using namespace std;

int main()
{
	double sale1, sale2, sale3, sale4, sale5;
	double total;
	int row;

	cout << "Enter today's sale for store 1: ";
	cin >> sale1;
	cout << "Enter today's sale for store 2: ";
	cin >> sale2;
	cout << "Enter today's sale for store 3: ";
	cin >> sale3;
	cout << "Enter today's sale for store 4: ";
	cin >> sale4;
	cout << "Enter today's sale for store 5: ";
	cin >> sale5;

	cout << endl;
	cout << "SALES BAR CHART" << endl;

	for (row = 0; row < 5; row++)
	{

	cout << '*';	
	cout << endl;

	}




	return 0;
}

thanks in advance!!

afg_91320

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Oct 11th, 2008

Re: charting using for loops??

So you want to print '*' n times, where n is a number of hundreds of dollars?
$300 - n = 3
$630 - n = 6
$690 - n = 6? (or n = 7?)

If so, divide each sale by n and store it in int (in that way $630 will end up being 6.3, but stored in int: 6!)

Then add another loop inside row-loop that will print cout<<'*' for n times.
Like this pseudocode:

C++ Syntax (Toggle Plain Text)

for rows loop
     for n loop
          print *
     end n loop
     print newline
end rows loop

Sci@phy

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Oct 11th, 2008

Re: charting using for loops??

thanks

so n should be = 100, making the statement true???

afg_91320

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Oct 11th, 2008

Re: charting using for loops??

i followed your advice, but i feel like this code has some errors:

C++ Syntax (Toggle Plain Text)
cout << "SALES BAR CHART" << endl;
 
	for (row = 0; row < 5; row++);
	{
 
	cout << '*';	
	cout << endl;
 
	}
 
	for (n = 100)
	{
 
	sale1 /= n;
	sale2 /= n;
	sale3 /= n;
	sale4 /= n;
	sale5 /= n;
 
 
	}
cout << "SALES BAR CHART" << endl;

	for (row = 0; row < 5; row++);
	{

	cout << '*';	
	cout << endl;

	}

	for (n = 100)
	{
	
	sale1 /= n;
	sale2 /= n;
	sale3 /= n;
	sale4 /= n;
	sale5 /= n;


	}

afg_91320

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Oct 11th, 2008

Re: charting using for loops??

btw this is how it should be on the console

store 1: $500
store 2: $600

chart:
(each * = $100)
store 1: *****
store 2: ******

etc.

afg_91320

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Oct 12th, 2008

Re: charting using for loops??

No, no...
n := sale/100;
And then INSIDE for loop that counts from 0 to n insert cout<<'*';

Sci@phy

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Oct 12th, 2008

Re: charting using for loops??

how do i do that??

afg_91320

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Oct 12th, 2008

Re: charting using for loops??

Click to Expand / Collapse Quote originally posted by afg_91320 ...

i followed your advice, but i feel like this code has some errors:
(Toggle Plain Text)
cout << "SALES BAR CHART" << endl;

    (Toggle Plain Text)
 
 	for (row = 0; row < 5; row++);
	{

	cout << '*';	
	cout << endl;

	}
 	for (row = 0; row < 5; row++);
	{

	cout << '*';	
	cout << endl;

	}
  
	for (n = 100)
	{
	
	sale1 /= n;
	sale2 /= n;
	sale3 /= n;
	sale4 /= n;
	sale5 /= n;


	}
cout << "SALES BAR CHART" << endl; (Toggle Plain Text) for (row = 0; row < 5; row++); { cout << '*'; cout << endl; } for (row = 0; row < 5; row++); { cout << '*'; cout << endl; } for (n = 100) { sale1 /= n; sale2 /= n; sale3 /= n; sale4 /= n; sale5 /= n; }

is the text in bold right??

Last edited by afg_91320; Oct 12th, 2008 at 9:56 pm.

afg_91320

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Oct 13th, 2008

Re: charting using for loops??

Using dynamic memory allocation, you can come up with this:

C++ Syntax (Toggle Plain Text)
#include <iostream>
#include <alloc.h>
 
using namespace std;
 
int main()
{
  int nstores, *sales;
 
  cout << "SALES BAR CHART" << endl;
  cout << "---------------" << endl;
  cout << "Enter the number of stores: ";
  cin >> nstores;
 
  sales = (int *) malloc(sizeof(int)*nstores);
 
  for(int i=0; i<nstores; i++)
  {
    cout << "Enter today's sales for store number " << i+1 << ": ";
    cin >> sales[i];
    sales[i] /= 100;
  }
  cout << "\n\n";
  for( int i=0; i<nstores; i++)
  {
    cout << "Store " << i+1 << ": ";
    for (int j=0; j<sales[i]; j++)
      cout << '*';
    cout << "\n";
  }
  system("pause>nul");
  return 0;
}
#include <iostream>
#include <alloc.h>

using namespace std;

int main()
{
  int nstores, *sales;

  cout << "SALES BAR CHART" << endl;
  cout << "---------------" << endl;
  cout << "Enter the number of stores: ";
  cin >> nstores;

  sales = (int *) malloc(sizeof(int)*nstores);

  for(int i=0; i<nstores; i++)
  {
    cout << "Enter today's sales for store number " << i+1 << ": ";
    cin >> sales[i];
    sales[i] /= 100;
  }
  cout << "\n\n";
  for( int i=0; i<nstores; i++)
  {
    cout << "Store " << i+1 << ": ";
    for (int j=0; j<sales[i]; j++)
      cout << '*';
    cout << "\n";
  }
  system("pause>nul");
  return 0;
}

It's 3:18am and I'm tired. PM me if you have any questions. I don't have problems adding you to msn either.

emotionalone

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Oct 13th, 2008

Re: charting using for loops??

If we want to go dynamic, why not use new instead of malloc()?

Sci@phy

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