Display Two Dimen.. Info Help?

**Dilmerv** · 04-28-2006

Hey guys I'm reading a file into a two dimensional array that look like this:

2 2 2 2 2
2 2 2 2 2
234 234 234 234 2.32323e+006
22222 2 2 2 2
Dilmer Valecillos ComputerScience 02/04/3008 323.009
2 22 2 2 2

My problem is when displaying the info in the program I want to specify every row with a number

1. 2 2 2 2 2
2. 2 2 2 2 2
3. 234 234 234 234 2.32323e+006
4. 22222 2 2 2 2
5. Dilmer Valecillos ComputerScience 02/04/3008 323.009
6. 2 22 2 2 2

This is My code so far

Code:

system("cls");
	string Engine[NROWS][NCOLS];
	ifstream inFile;
	inFile.open("Engineer.dat");
	cout << " View ...\n" << endl;
	///////////////Read data in file//////////////////////
	for ( int i = 0 ; i <= NROWS -1; i++)
	{
		for ( int j = 0; j <= NCOLS-1; j++)
		{
			inFile >> Engine [i] [j];
		}	
	}
	
	///////////////Print Data in file//////////////////////
	for (  i = 0 ; i <= NROWS -1; i++)
	{
		for ( int j = 0; j <= NCOLS -1 ; j++)
		{	
			cout << " " << Engine [i][j];
		}
		cout << endl; //I want to have a new 
//line after the end of the las word could I do that?
	}
	inFile.close();
	system ("pause");

**whiteflags** · 04-28-2006

Code:

cout << i << ". " << Engine[i][j] << "\n";

Why wouldn't that work?

**Dilmerv** · 04-28-2006

Yes but Engine [i][j]; goes from 1 to 20 and there are only 3 rows that I'm reading from the file so either I have to change the for loop or do something else !

**Dilmerv** · 04-28-2006

and if I do this
cout << i << ". " << Engine[i][j] << "\n";

It will display my info like this
2
2
2
2
2
Instead of having the whole row in one line

**Dilmerv** · 04-28-2006

Basically I'm asking for 5 inputs that are First name, Last Name, Degree, HireDate, and Salary. Those four are output it to a file.

Jason Bush ComputerScience 04/02/2004 $45.000

But Since I have more than 1 record I need to be able to read the first line and display the data in the program as well as edit the data, and delete the data.
So I'm kind of having a hard time but some advice would be helpful

Thank you

**Decrypt** · 04-28-2006

You want to print the row number before you print each row. Do it just like you print out a new line after every row, only backwards:

Code:

for( i loop)
{
   output row number
   for (j loop)
      { print the row }
   output new line
}

**whiteflags** · 04-28-2006

Well here is what I suggest you do instead. Make a simple vector of strings, read the strings with in with a space for a delimeter, and push it onto the vetor.

Code:

#include <iostream>
#include <fstream>
#include <string>
#include <vector>


int main (void)
{
    using namespace std;
    ifstream inFile("Engineer.dat", ios::out);
    vector<string> engine;
    string temp;
    short i = 0;
    
    cout << " View ...\n" << endl;
    while (getline(inFile, temp, ' '))
    {
          engine.push_back(temp);
          cout << ++i << ". " << temp << "\n";
    }
inFile.close();
cin.get();
return 0;
}

OUTPUT: 
 View ...

1. Jason
2. Bush
3. ComputerScience
4. 04/02/2004
5. $45.000

**Dilmerv** · 04-28-2006

Thanks a lot now I'm getting this output

1. 2 2 2 2 2
2. 2 2 22 2 2
3. 2 2 2 2 2
4. 2 2 2 2 2
5. 2 2 2 2 2
6. 2 2 2 2 2
7. 2 2 2 2 2
8. 2 2 2 2 2
9. Dilmer Valecillos Computer Nose 222
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.

Is there a way to add like inFile.eof to my for loop ?
I need to display just the info until the end of the last data

so instead of doing this :

Code:

		for (  i = 0 ; i < NROWS -1.; i++)
		{
			 cout << i +1 << ". ";
			for ( int j = 0; j <= NCOLS -1 ; j++)
			{		
				cout << Engine[i][j] << " ";
			}
			cout << endl;
		}

could I do this?

Code:


		for (  i = 0 ; i < inFile.eof(); i++)
		{
			 cout << i +1 << ". ";
			for ( int j = 0; j <= NCOLS -1 ; j++)
			{		
				cout << Engine[i][j] << " ";
			}
			cout << endl;
		}

Well I tried it but I'm only getting the two first rows follow by 5 columns

**elad** · 04-28-2006

Do not use the return value of eof() as a loop terminating condition regarding reading from a file. Use the fail bit of a stream:

while(fin >> ....) //for space delimited values
while(fin.getline(...)) //for reading in C style strings with whitespace
whille(getline(....)) //for reading in STL style strings with whitespace

or a given value:

while(i < 55) //or some other discreet value

If you want to put all the data in the file in the same table (two dimenstional array), then using a table of strings (an STL vector of STL strings as previously recommended or a 2 dimenstional array of type char if you aren't familiar with STL containers) is probably your best choice given you have more than one data type within the file otherwise.

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