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C++ File I/O

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Join Date: Oct 2005

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kdw3

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C++ File I/O

Nov 29th, 2005

I am trying to create a simple program to read in words from a file, count the words, and output a histogram of word lengths normalised to 1. I am having trouble reading in the words from the file. If anyone could help, it would be greatly appreciated.

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Kevin

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Join Date: Aug 2005

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SpS

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Re: C++ File I/O

Nov 29th, 2005

It sounds like homework....post what you have done till now and ask specific question regarding that code

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Join Date: Oct 2005

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kdw3

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Re: C++ File I/O

Nov 30th, 2005

Ok, yes, it is homework, and I've been tearing my hair out trying to get it to work, but eventually got there. The final thing I need to do is adjust the output that is sent to the console. It is supposed to be a histogram displaying the frequency of word lengths. I can get it to display, but its very bunched up. I think I'm supposed to use the setw() function, but am not sure where it is supposed to be used. The code is below, and any help would be appreciated.

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 C++ Syntax (Toggle Plain Text) 
int Displayhist (int scaledfrequency[])
{
    cout << setw(4);
    for (int row = 20 ; row >= 0; row--)
    {
        if (row == 20)
        {
           cout << "1.0 ";
        }
        else if (row == 0)
        {
             cout << "0.0 ";
        }
        else if (row == (20 / 2))
        {
             cout << "0.5 ";
        }
        else
        {
            cout << " .  ";
        }
 
        for (int k = 0; k < 20; k++)
        {
 
            if (scaledfrequency[k] >= row) 
            {
               cout << "*";
            }
            else
            {
                cout << " ";
            }
        }
 
    cout << endl;
    }
    for (int j = 0; j <= 20; j++)
    {
        cout << j;
    }
    cout << endl;
}
int Displayhist (int scaledfrequency[])
{
    cout << setw(4);
    for (int row = 20 ; row >= 0; row--)
    {
        if (row == 20)
        {
           cout << "1.0 ";
        }
        else if (row == 0)
        {
             cout << "0.0 ";
        }
        else if (row == (20 / 2))
        {
             cout << "0.5 ";
        }
        else
        {
            cout << " .  ";
        }

        for (int k = 0; k < 20; k++)
        {

            if (scaledfrequency[k] >= row) 
            {
               cout << "*";
            }
            else
            {
                cout << " ";
            }
        }
    
    cout << endl;
    }
    for (int j = 0; j <= 20; j++)
    {
        cout << j;
    }
    cout << endl;
}

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

Regards
Kevin

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Dave Sinkula Dave Sinkula is offline

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long time no c

Re: C++ File I/O

Nov 30th, 2005

You need to make room for the numbers on the bottom, I'd guess. And that would mean you'd need to space out your columns:

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        for (int k = 0; k < 20; k++)
        {

            if (scaledfrequency[k] >= row)
            {
               cout << " * ";
            }
            else
            {
                cout << "   ";
            }
        }

    cout << endl;
    }
    cout << "    ";
    for (int j = 0; j <= 20; j++)
    {
        cout << setw(2) << j << ' ';
    }

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