//adding a book to the issue book list i,e exp list
// It returns true when book is added to the exp list
public bool IssueABook(int sid, int bid)
{
int num = 0;
// TO Verify whether student list has sid or not
//if Student list has student then num is incremented by 1
foreach (Student student in studentList)
{
if (sid == student.Studentid)
{
num++;
break;
}
}
// TO Verify whether bookslist has bid or not
//If booklist has book id then num is incremented by 1
if (num > 0)
{
int sum = 0;
foreach (Book book in bookList)
{
if (bid == book.Bookid)
{
sum++;
break;
}
}
if (sum > 0)
{
//To verify whether book is issued or not
// If book is issued then res is incremented by 1
int res = 0;
foreach (IssueBook issueBook in exp)
{
if (issueBook.Bid == bid)
{
res++;
break;
}
}
if (res == 0)
{
int count = 0;
foreach (IssueBook isu in exp)
{
if (isu.Sid == sid)
{
count++;
}
}
if (count < 3)
{
IssueBook newIssue = new IssueBook(sid, bid);
DateTime issueDate = DateTime.Now;
DateTime returnDate = issueDate.AddDays(15);
newIssue.IssueDate = issueDate;
newIssue.Returndate = returnDate;
exp.Add(newIssue);
return(true);
}
}
}
}
return(false);
}
