the thing is
Condition if(a,b,x,y)
is evaluated by the last variable present in it bcoz Comma Operator return
the last variable or constant present in it.....
give y some other value than 0 you will see the difference
--
Amol Sharma
Third Year Student
Computer Science and Engineering
MNNIT Allahabad
On Fri, Aug 12, 2011 at 1:51 PM, sirshak das <rishi.godfat...@gmail.com>wrote:
> if it were if(a,b,y,x) then output wud hav been EXAM
>
>
> On Fri, Aug 12, 2011 at 4:14 AM, Prakash D <cegprak...@gmail.com> wrote:
>
>> @anuj kumar: try this
>>
>> #include<stdio.h>
>> #include<string.h>
>> int main()
>> {
>> int a=10,b=20;
>> char x=1,y=0;
>> printf("%d\n",a,b,x,y);
>> printf("%d\n",(a,b,x,y));
>>
>> if(a,b,x,y)
>> {
>> printf("EXAM");
>> }
>> getchar();
>> }
>>
>> this will print 10 and 0
>> because if the outer bracket is not there, only the first element is
>> considered it ignores the rest. if there is a bracket it just pushes into
>> the stack left to right and the last element is considered..
>>
>> within if, there is no outer brackets but it tries to convert to bool and
>> statement will execute like "if((bool)(a,b,x,y))"
>> so the if condition fails
>>
>> correct me if i'm wrong
>>
>> On Thu, Aug 11, 2011 at 5:18 PM, sukran dhawan <sukrandha...@gmail.com>wrote:
>>
>>> the output should be blank. because comma is a operator in c which
>>> associates from left to right. so each of a ,b,x,y is evaluated and y is the
>>> last one to be evaluated and its value(0) is returned as the value of the
>>> expression.so the if condition returns false.
>>> i dont understand how u got that output !
>>>
>>>
>>> On Thu, Aug 11, 2011 at 4:29 PM, Prem Krishna Chettri <
>>> hprem...@gmail.com> wrote:
>>>
>>>> Yep,
>>>>
>>>> Ideally, if() statement evaluates the last push stack value from the
>>>> stack and apparently here the last value evaluates to be 0 resulting the
>>>> failure of the if condition.
>>>>
>>>> Please verify the compilation. :)
>>>>
>>>> Prem
>>>>
>>>>
>>>> On Thu, Aug 11, 2011 at 4:21 PM, hary rathor <harry.rat...@gmail.com>wrote:
>>>>
>>>>> print nothing , your output is wrong
>>>>>
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>
>
>
> --
> Rishi
>
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