Zhiyong Xu writes:
>
> here's the description:
> 1. I have a function evaluate defined in t.c
> 2. in ex.c, I call function evaluate without prototype
> defined.
> using gcc -lm ex.c t.c, I can generate the executable
> file a.out,
> when executing, the result is wrong
> 3. if I modify ex.c, add the prototype definition, the
> result is correct.
>
> Anything wrong with the first case?
Yes:
int main(void)
{
evaluate(sin, 2.0,3.0,4.0);
evaluate(sqrt,2.0,3.0,4.0);
return(0);
}
But working without ptototypes is stupid and pointless. Don't do it.
Andrew.
