Análisis de datos int de un archivo .txt para cálculos

This is homework. Currently working with binary file access; I'm trying to read data of type int from a text file. I need to calculate the mean, high/low value, and # of values in the data. I have a method for retrieving and displaying the data from the file, but I don't know how to store/use the values in the file for calculation. The data file has 20 values of type int.

Esto es lo que tengo hasta ahora.

    static void Main(string[] args)
    {
        /* Initializing FileStream and BinaryReader 
         * for file access and reading int data from file
         */
        FileStream filStream;
        BinaryReader binReader;

        //Instructions to user to open specific data file
        Console.WriteLine("Enter IntData.txt for name of file: ");
        string fileName = Console.ReadLine();
        try
        {
            filStream = new FileStream(fileName, FileMode.Open,
                                        FileAccess.Read);
            binReader = new BinaryReader(filStream);

            RetrieveAndDisplayData(binReader);

             //Declared array for possible calculations
            int[] numbers = new int[20]; 
            for (int i = 0; i < numbers.Length; i++) 
            {
                //Numbers from file go here
                //How to fill array with data values from file?
            }

            binReader.Close();
            filStream.Close();
        }
            //Exception Handling
        catch (FileNotFoundException exc)
        {
            Console.WriteLine(exc.Message);
        }
        catch (InvalidDataException exc)
        {
            Console.WriteLine(exc.Message);
        }
        catch (EndOfStreamException exc)
        {
            Console.WriteLine(exc.Message);
        }
        catch (IOException exc)
        {
            Console.WriteLine(exc.Message);
        }
        Console.ReadKey();
    }

    public static void RetrieveAndDisplayData(BinaryReader binReader)
    {
        // Read string data from the file
        Console.WriteLine(binReader.ReadString());

        // Read integer data from the file
        for (int i = 0; i < 11; i++)
        {
            Console.WriteLine(binReader.ReadInt32());
        }

        // Read decimal data from the file
        Console.WriteLine(binReader.ReadDecimal());
    }
}

}

preguntado el 27 de noviembre de 13 a las 07:11

It's not clear what you don't know at this point. Do you know how to create an array? Do you definitely need a 2-dimensional array? Do you know how many values you'll need to read? -

stackoverflow.com/questions/16136383/… -

I have 20 values to work with. Would using something like this work? int[] numbers; numbers = new int[20]; then using the array.getlength for the # of values? -

Si sabes qué you have 20 integers, then why do you only try to read 11 of them (for (int i = 0; i < 11; i++))? -

can you provide sample your txt file format? -

2 Respuestas

string filename = "....";
var content = System.IO.File.ReadAllText(filename);
var arr = content.Split("\n");
var intArr = arr.Select(x=> int.Parse(x)).ToArray(); // will return arr as int

Given a text file input like

1
2
3

*code not verified, I will do later if it won't work.

respondido 27 nov., 13:07

Sort of off-topic, but this is one of those situations where I feel the var keyword is detrimental. To a beginner like the OP, this code is way more unclear than if types were written properly. Why is filename a string, but content a var? - tobberoth

var is easier to type on my tablet, when I can't verify the syntax in VS. filename is string as above... - Nickolai Nielsen

for store data from file to array try change your code like this

...
filStream = new FileStream(fileName, FileMode.Open,
                                    FileAccess.Read);
binReader = new BinaryReader(filStream);

//Declared array for possible calculations
int[] numbers = new int[20]; 
for (int i = 0; i < numbers.Length; i++) 
{
    numbers[i] = binReader.ReadInt32();
}
...

respondido 27 nov., 13:09

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