these are some lines form fflush man pages
For output streams, fflush() forces a write of all user-space buffered data
for the given output or update stream via the stream's underlying write
function. *For input streams, fflush() discards any buffered data that has
been fetched from the underlying file, but has not been by the application.*
*
The standards do not specify the behavior for input streams.* Most other
implementations behave the same as Linux.
On Sun, Oct 9, 2011 at 7:17 PM, Sanjay Rajpal <srn...@gmail.com> wrote:
> Sorry for previous email, did not read the question properly.
>
> Sanju
> :)
>
>
>
> On Sun, Oct 9, 2011 at 7:12 PM, Sanjay Rajpal <srn...@gmail.com> wrote:
>
>> After scanning the variable a, you will give a whitespace
>> character(space,tab or newline), which will also get stored into stdin file.
>> So next statement will scan this whitespace character.
>>
>> fflush(stdin) flushes(clears) the contents of stdin file, so this time
>> scanf will not get whitespace character, instead it will get the character
>> entered by user.
>>
>> or in second scanf statement, change it as scanf(" %c",&b), notice the
>> space before %c.
>>
>> Correct me if m wrong :)
>>
>> Sanju
>> :)
>>
>>
>>
>> On Sun, Oct 9, 2011 at 6:55 PM, rajul jain <rajuljain...@gmail.com>wrote:
>>
>>> just take input a and b in one statement like this scanf("%d %d ",&a
>>> ,&b);
>>>
>>>
>>> On Sun, Oct 9, 2011 at 4:50 PM, Saravanan Selvamani <
>>> saravananselvam...@gmail.com> wrote:
>>>
>>>> Hi,
>>>> In the following programming when i gave character input rather
>>>> than integer , the following scanf statement is not working . so i
>>>> introduce
>>>> the fflush(stdin) before the last scanf statement.
>>>> But i get the same error as i before .
>>>> #include<stdio.h>
>>>> int main()
>>>> {
>>>> int a,b;
>>>> scanf("%d",&a);
>>>> -------->
>>>> fflush(stdin);
>>>> scanf("%d",&b);
>>>> printf("%d",b); //prints some
>>>> garbage value.
>>>> return 0;
>>>> }
>>>> so then what is the use of the fflush(stdin) and how to correct the
>>>> above error? Thanks in advance.
>>>> Regards
>>>> P.S.Saravanan.
>>>> --
>>>> why so serious?????????
>>>>
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>>>
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>>
>>
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--
Sunny Aggrawal
B.Tech. V year,CSI
Indian Institute Of Technology,Roorkee
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