exceptions

[Mor1994]

Hi everyone!
im writing a code, and im requested to use execptions.
my question- where do i put the "throw" calls? in the main> in the function? in the class?
and the same for the "try" call.
for example- part of my code:

 //Main
cout<<"Insert product's serial number, composed of 5 integers: ";
			cin>>serial;
cout<<endl<<"Insert product's quantity(weight at stock, at least 1).";
			cin>>quantity;

must i write try&catch for each of the cases? or there is option to do one try for all cases? in addition, i want that if wrong input had recieved, the code would have scanned another values, untill it is correct. how do i do this?

thanks!

[LB]

You don't need exceptions/try/catch with input handling. If you want to repeatedly ask the user to enter valid input, read http://www.LB-Stuff.com/user-input

You only throw exceptions where you don't know how to recover from an error.
You only catch exceptions where you do     know how to recover from an error.

[Mor1994]

thank you. so if i want to use the throw command in order to start getting inputs again,
its possible ?

[LB]

No. It's a bad idea because you should never throw an exception if you can handle the problem.

[Mor1994]

thanks :)