printing arrays to file. in order

[howardstark]

hey guys i have 3 arrays (even, odd and negative), they are all different sizes, but they maximum elements they can have is 50. how do i write them to a file in this format

EVEN ODD NEGATIVE
2 3 -2
4 5 -4
6 7 -9

size = 50; //they dont all 50, its just that array cant be bigger than 50

for (int i =0; i < size; i++)
    {
        cout <<setw(5);
        if (even[i] != 0)
        {
            myfile << eList[i];
            myfile << endl;
        }
        else
            myfile << " ";
    }
for (int i =0; i < size; i++)
    {
        cout <<setw(5);
        if (odds[i] != 0)
        {
            myfile << oList[i];
            myfile << endl;
        }
        else
            myfile << " ";
    }
    for (int i =0; i < size; i++)
    {
        myfile <<setw(5);
        if (negatives[i] != 0)
        {
            myfile << nList[i];
            myfile << endl;
        }
        else
            myfile << " ";
    }

i have no idea.. please help... i know the code above is wrong, but thats the best i got