On 08/12/2010 11:00 AM, mahmoodn wrote:
>
> Dear all,
>
> First consider this:
> bool flag = false;
> while (condition) {
> ...
> if ( !flag && ANOTHER_CONDITION ) {
> ....
> }
> }
> If the "while" loop iterates for 10 times, the both flag and
> ANOTHER_CONDITION are checked 10 times.
>
> Now consider this:
> bool flag = false;
> while (condition) {
> ...
> if ( !flag && ANOTHER_CONDITION ) {
> ....
> flag = true;
> }
> }
> If the "while" loop iterates for 10 times and in the first iteration "flag =
> true;" is executed, then how many times, ANOTHER_CONDITION is checked? 1 or
> 10?
Once. It's part of the definition of && that its right-hand-side doesn't get
used if its left-hand-size evaluates to false.
Andrew.
