CODEWITHSUNDEEP
c#arraysmethodsmultidimensional-array
TheBoringGuy
TheBoringGuy

Reputation: 151

Using method 2 dimensional array?

Getting an error at (private int >>>TotArray<< (int[,] array)) Which tells me I cannot return value. Can anyone help me and tell me what I am doing wrong?

What this code does is it supposed to add all the numbers of this 2 dimensional array. But in the moment it does nothing.

    int[,] A = new int[3, 4] 
    { 
        { 4, -5, 12, -2},
        { -9, 15, 19, 6},
        { 18, -33, -1, 7}
    };
    public Form1()
    {
        InitializeComponent();
    }
    private int TotArray(int[,] array)//<<<<<< error
    {
        int sum = 0;
        int rows = array.GetLength(0);
        int cols = array.GetLength(1);

        for (int i = 0; i < rows; i++)
        {
            for (int j = 0; j < cols; j++)
            {
                sum += array[i, j];
            }
        }
        richTextBox1.Text = ("The sum of the array is " + sum.ToString() + ".");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        TotArray(A);
    }

Upvotes: 0

Views: 524

Answers (3)

Selman Gen&#231;
Selman Gen&#231;

Reputation: 101681

Your return type is int but you are not returning anything from your method.If you don't want to return anything change return type to void or return something.

private int TotArray(int[,] array)
{
    int sum = 0;
    int rows = array.GetLength(0);
    int cols = array.GetLength(1);

    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            sum += array[i, j];
        }
    }

    return sum;
}

private void button1_Click(object sender, EventArgs e)
{
   int sum = TotArray(A);
   richTextBox1.Text = string.Format("The sum of the array is {0}.", sum);
}

Upvotes: 2

Xela
Xela

Reputation: 2382

Put

return sum;

At the end of you're TotArray method.

Then place(for testing)

Debug.WriteLine(TotArray(A));

In your calling code, run the program, check the output window and your sum should be returned in the output window.

Upvotes: 0

dvlsg
dvlsg

Reputation: 5538

I think you are getting an error because your TotArray method isn't actually returning an int.

What happens if you switch it to the following:

private void TotArray(int[,] array)

And if that doesnt fix it, can you post the error message?

Upvotes: 2

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