Re: printf() and scanf() questions

Walter Roberson wrote:
>>
>> 1. scanf() provides the "%f" specifier for float. How can it discern 
>> when we pass a double?
> 
> %f indicates floating point in general, not the type 'float'.
> If you are supplying a pointer to a float, you use "%hf".
> If you are supplying a pointer to a double, you use "%f".
> If you are supplying a pointer to a long double, you use "%Lf".

I haven't checked the very-very latest changes in the standard, but I 
don't believe they can be that drastic. In the original edition of C99

- 'h' cannot be used in '%f'
- '%f' takes a 'float*' argument, '%lf' takes a 'double*' argument

-- 
Best regards,
Andrey Tarasevich