#include <fstream.h>
#include<iostream.h>
#include <iomanip.h>
#include<stdlib.h>
int main()
{
char filename[81];
int prodno;
int sales;
double price;
double total;

cout<<setprecision(2)
<<setiosflags(ios::fixed)
<<setiosflags(ios::showpoint);
cout<<"\nenter the name of the sales file: ";
cin.getline(filename,81);
ifstream salesfile(filename);
if(!salesfile)
{
cout<<"\nerror:file could not be opened.";
exit(1);
}

cout<<endl<<endl;
cout<<setw(8)<<"product no."<<setw(10)<<"sales"
<<setw(10)<<"price"<<setw(12)<<total<<endl;
salesfile>>prodno>>sales>>price;
while(!salesfile.eof())
{
total=sales*price;
if(total>500.00)
{
cout<<setw(8)<<prodno<<setw(10)<<sales
<<setw(10)<<price<<setw(12)<<total<<endl;
}
salesfile>>prodno>>sales>>price;
}
salesfile.close();
return 0;
}
