Another take on decimal data types
kdevel
kdevel at vogtner.de
Thu Jan 11 21:12:59 UTC 2018
On Thursday, 11 January 2018 at 20:40:01 UTC, Dmitry Olshansky
wrote:
>> printf ("%.2f\n", d);
>
> C’s printf by definition can’t be customized.
Sure.
http://www.gnu.org/software/libc/manual/html_node/Customizing-Printf.html
> What did you expect?
To be honest: A compile time error. Modern C compilers can check
such format strings. Example: GCC 6:
mis.c
```
#include <stdio.h>
int main ()
{
double d = 0;
printf ("%p\n", d);
return 0;
}
```
$ gcc -Wall mis.c
mis.c: In function 'main':
mis.c:6:14: warning: format '%p' expects argument of type 'void
*', but argument 2 has type 'double' [-Wformat=]
printf ("%p\n", d);
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