thanks
Andrew Haley wrote:
>
> 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.
>
>
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