File stream problem. PLEASE HELP

[ellimist14]

I tried the following and it didn't work and I can't figure this out

double count, SalesID, modelCode
ifstream in;

while (!fin.eof())
{
fin >> count
sum+=count
}

That's basically what I did but what the problem is there like 60 rows and 4 columns in the file. I only want to tally numbers from one column. For example one column is amount sold. I only want to assign numbers from that column to "count". Anyone PLEASE help

[EVOEx]

eof will only return true after a read has failed. So the last count is wrong.

Also, it's better to use:

while(fin >> count)

Edit: When I looked at your code I assumed you left out some lines. If you didn't, then don't forget to initialise your variables :P.

[ellimist14]

Why? What exactly does that do?

[MacNilly]

Since you know the format of the file, why not read in a full line at a time, extract the necessary data, ignoring the rest of what's in the line?

I believe cin.getline() and cin << extraction operator should be sufficient for that.

[ellimist14]

A little bit more explantion may be necassary