ok this is a really basic question but I just can't seem to wrap my head around it. The basic syntax of how to open a file and check it and whatnot makes sense to me. But how the compiler reads from the file doesn't. For example if I have something like
Salesperson ID Model Code Count Sold New Line
8043 3 1 \n
Obviously each of these numbers have a specific function but I don't understand how to assign them each to the job they must do. I hope that makes sense.
Not enough information, could you elaborate on the problem?
You first have to declare variables to hold each of the numbers. Then just use the stream's >> operator to read from the file into the number
int SalespersonID, ModelCode, Count, Sold;
ifstream in("filename.txt");
while( in >> SalespersonID, >> ModelCode >> Count >> Sold)
{
// blabla
}You first have to declare variables to hold each of the numbers. Then just use the stream's >> operator to read from the file into the number
int SalespersonID, ModelCode, Count, Sold; ifstream in("filename.txt"); while( in >> SalespersonID, >> ModelCode >> Count >> Sold) { // blabla }
Dude I could kiss you. I hope that works
Not enough information, could you elaborate on the problem?
basically take the model code and the count and calculate how much each salesperson sold then output to a report (text file)
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
It didn't work because you failed to follow the example I posted. Notice I did NOT use eof() because it doesn't work the way you think it works.
Please search the thread's before:
http://www.daniweb.com/forums/post814395.html <<here you may find something useful.
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