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.
Jump to PostNot enough information, could you elaborate on the problem?
Jump to PostYou 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 …
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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