@Tanmay: fflush do work. Atleast it does not become a infinite loop.
But still the output is some garbage value in case of character input

On Sep 14, 1:04 am, Raghu Sarangapani <[email protected]>
wrote:
> I modified your program as below.
> Every time, value of ret = 0.
> scanf is repeatedly failing cos there is some junk in the input stream
> Hence it prints junk values
>
> #include <stdio.h>
> void main()
> {
>     while(1)
>     {
>         int opt, ret;
>         ret=scanf("%d",&opt);
>         printf("opt is %d\n",opt);
>         printf("ret is %d\n",ret);
>     }
>
> }
>
> Regards,
> Raghu
>
> On Tue, Sep 13, 2011 at 3:23 AM, Avinash Dharan 
> <[email protected]>wrote:
>
>
>
>
>
>
>
> > #include <stdio.h>
> > void main()
> > {
> >      while(1)
> >      {
> >         int opt;
> >         scanf("%d",&opt);
> >        printf("%d\n",opt);
> >    }
> > }
>
> > when i execute this program, if i give a character instead of an integer,
> > it goes into an infinite loop. why is it so?
>
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