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Double Arrays HELP!!!!!!

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Join Date: Jul 2005

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Double Arrays HELP!!!!!!

Jul 7th, 2005

Hey guys:
Can anyone please help me. I am having problems with this program and nned help understanding this. here is the code and the problem. Thanks.

=========Mr. President============

Use a text editor such as Notepad to create a text file that contains several integers. The first integer in the file should be the number of (double) numbers that follow. Name this file assign6.txt.

Write a program that reads from the file the number of numbers to process (the first number in the file) and then reads the remaining numbers into a double array. Assume that there will be no more than 100 numbers to process. After reading all of the numbers into the array, close the file. Then have your program display all of the numbers in the array, five numbers per line, with a precision of 2 and using 10 columns for each number. Don't forget to provide appropriate messages before displaying any numbers. After displaying the numbers in the array, then display the largest and the smallest numbers in the array. Your program should use functions for determining the largest and smallest.

==========================================================

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
# include <iostream>
# include < iomanip>
# include <fstream>
using namespace std;
 
const int dMAX = 100;
 
int getData (int numbers [], int size, int range);
 
void printData (const int numbers[], int size, int lineSize);
 
int main (void)
{
	int size;
	int nums [dMAX];
 
	size= getData (nums, dMAX);
	printData (nums, size, 10);
 
	return 0;
}
 
int getData (int data [], int size, int range)
{
 
char aChar;
int dataIn;
int loader = 0;
while (loader < size && (fsData >> dataIn))
	if dataIn >= 0 && dataIn <= range)
		data [loader+=] = dataIn;
	else 
		cout << 'Data point " << dataIn << "invalid. Ignored. \n";
 
return loader;
 
void printData (const int data [], int size, int lineSize)
 
	cout << setw (3) << list [i];
		if (numPrinted < 4)
			numPrinted++;
		else
		   {
		   cout << endl;
		   numPrinted = 0;
		   }
	   cout << endl << endl;
	   return;
	}
 
# include <iostream>
# include < iomanip>
# include <fstream>
using namespace std;

const int dMAX = 100;

int getData (int numbers [], int size, int range);

void printData (const int numbers[], int size, int lineSize);

int main (void)
{
	int size;
	int nums [dMAX];
	
	size= getData (nums, dMAX);
	printData (nums, size, 10);
	
	return 0;
}

int getData (int data [], int size, int range)
{

char aChar;
int dataIn;
int loader = 0;
while (loader < size && (fsData >> dataIn))
	if dataIn >= 0 && dataIn <= range)
		data [loader+=] = dataIn;
	else 
		cout << 'Data point " << dataIn << "invalid. Ignored. \n";

return loader;

void printData (const int data [], int size, int lineSize)

	cout << setw (3) << list [i];
		if (numPrinted < 4)
			numPrinted++;
		else
		   {
		   cout << endl;
		   numPrinted = 0;
		   }
	   cout << endl << endl;
	   return;
	}

<< moderator edit: added [code][/code] tags >>

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Re: Double Arrays HELP!!!!!!

Jul 7th, 2005

•

Originally Posted by mr. President

I am having problems with this program and nned help understanding this.

Could you describe your problem (or is it just the syntax errors)? Perhaps you could also post a small sample input file so we don't have to reinvent your wheel?

"One of the methods used by statists to destroy capitalism consists in establishing controls that tie a given industry hand and foot, making it unable to solve its problems, then declaring that freedom has failed and stronger controls are necessary." --Ayn Rand

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Join Date: Jun 2005

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zyruz

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Re: Double Arrays HELP!!!!!!

Jul 7th, 2005

You have multiple errors in your code:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
int getData (int numbers [], int size, int range);
//.......
size= getData (nums, dMAX);
int getData (int numbers [], int size, int range);
//.......
size= getData (nums, dMAX);

You are calling the function with too few argument's.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
while (loader < size && (fsData >> dataIn))
while (loader < size && (fsData >> dataIn))

You havent declared fsData.

Help with Code Tags

C++ Syntax (Toggle Plain Text)

data [loader+=] = dataIn;

This gotta be a typo, and data aint declared.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
cout << setw (3) << list [i];
if (numPrinted < 4)
cout << setw (3) << list [i];
if (numPrinted < 4)

It seems like you lack a loop here, or else you are only printing out one char.
i and numPrinted aint declared.

And your function havent braces between them, getData() and printData.

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mr. President mr. President is offline

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Re: Double Arrays HELP!!!!!!

Jul 7th, 2005

here is what I have amended. am I close?? Please HELP

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
/********************************************************************** 
* Program 6     Files and Arrays
* Programmer    
* Date          7/7/2005
* Course        CSCI 221
* Description   Write a program that reads from the file the number of 
                numbers to process (the first number in the file) and 
                then reads the remaining numbers into a double array. 
                Also, the largest and the smallest numbers in the array
                will be displayed.
*********************************************************************/
 
#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;
 
int dMAX [99];
int largest;
 
int getData (int numbers [], int size);
void printData ( const int numbers [], int size, int lineSize);
 
int main (void)
{
int size;
 
ifstream myFile;  
 
   myFile.open ( "G:\\assign6.txt" ); 
   if ( !myFile ) 
   { 
   cout << "Error opening input file C:\\DATA.RPT " ;
 
          system ("PAUSE"); 
   }     
int numPrinted = 0;
for ( int i= 0; int i > 100; i++);
    {
        cout << setprecision (2) << setw (10) << list [i];
                if (numPinted < 4)
                       numPrinted++;
                   else
                   {
                       cout << endl;
                       numPrinted = 0;
                   }
  } 
 
double num [100];
       largest = d[0];
        for int i = 0; i < 100; i++)
            if (largest < d[i])
            largest = d[i];
 
        smallest = d[0];
        for (int i = 99; i >= 0; i--)
            cout << d [i] << endl; 
 
        system ("PAUSE");
 
        return 0;
 
}
/********************************************************************** 
* Program 6     Files and Arrays
* Programmer    
* Date          7/7/2005
* Course        CSCI 221
* Description   Write a program that reads from the file the number of 
                numbers to process (the first number in the file) and 
                then reads the remaining numbers into a double array. 
                Also, the largest and the smallest numbers in the array
                will be displayed.
*********************************************************************/

#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

int dMAX [99];
int largest;

int getData (int numbers [], int size);
void printData ( const int numbers [], int size, int lineSize);

int main (void)
{
int size;

ifstream myFile;  

   myFile.open ( "G:\\assign6.txt" ); 
   if ( !myFile ) 
   { 
   cout << "Error opening input file C:\\DATA.RPT " ;

          system ("PAUSE"); 
   }     
int numPrinted = 0;
for ( int i= 0; int i > 100; i++);
    {
        cout << setprecision (2) << setw (10) << list [i];
                if (numPinted < 4)
                       numPrinted++;
                   else
                   {
                       cout << endl;
                       numPrinted = 0;
                   }
  } 
          
double num [100];
       largest = d[0];
        for int i = 0; i < 100; i++)
            if (largest < d[i])
            largest = d[i];

        smallest = d[0];
        for (int i = 99; i >= 0; i--)
            cout << d [i] << endl; 
         
        system ("PAUSE");
        
        return 0;
        
}

<< moderator edit: added code tags: [code][/code] >>

I had an error on line 38 below int numPrinted

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Join Date: Sep 2004

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Narue

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Re: Double Arrays HELP!!!!!!

Jul 7th, 2005

I only looked at the line you mentioned, but it sure is a doozy:

 Help with Code Tags 
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for ( int i= 0; int i > 100; i++);
for ( int i= 0; int i > 100; i++);

Remove int from the condition, you want the loop to iterate 100 times I assume, so it should be i < 100, and a semicolon after the loop tag is interpreted as a loop with an empty body. In other words, change it to this:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
for ( int i = 0; i < 100; i++ )
for ( int i = 0; i < 100; i++ )

I'm here to prove you wrong.

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Join Date: Jul 2005

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mr. President mr. President is offline

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Re: Double Arrays HELP!!!!!!

Jul 8th, 2005

I Am Done!! Thanx For All Your Help!!!!

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