public void showAvgBynum(students s, List <selectCourses> sc)
{
this.clearScrean();
if (s == null)
{
Console.WriteLine("Not found strudent\n");
goto exit;
}
Console.WriteLine("fname\tlname\t\tavg");
Console.WriteLine("---------------------------------------");
int vahed_all = 0;
int sum_all = 0;
float avg = 0;
foreach (var item in sc)
{
if (s.num == item.st.num)
{
vahed_all += item.cr.vahed;
sum_all += (item.avg * item.cr.vahed);
}
}
try
{
avg = (sum_all / vahed_all);
}
catch
{
// zero division
avg = 0;
}
Console.WriteLine("{0}\t{1}\t{2}", s.firstname, s.lastname, avg);
exit:
Console.Write("press Enter to continue...");
Console.ReadLine();
}
public selectCourses(students s, courses c, int av)
{
this.st = s;
this.cr = c;
this.avg = av;
}