On 25/04/2011 1:03 PM, Duncan Murdoch wrote:
On 25/04/2011 12:51 PM, Jaimin Dave wrote:
> I tried using char ** but it is printing some random string.
str is a pointer to an array of pointers to strings. That's what char**
means. So you need to declare it that way, and use it that way.
This works for me:
File test.c:
void test(char **str)
{
Rprintf("%s",*str);
}
Oops, I just noticed that the include was missing. The full file should
have
#include "R.h"
at the beginning.
Duncan Murdoch
Duncan Murdoch
> On Sat, Apr 23, 2011 at 6:08 PM, Duncan
Murdoch<murdoch.dun...@gmail.com>wrote:
>
> > On 11-04-23 7:04 PM, Jaimin Dave wrote:
> >
> >> Hi,
> >> I am using a function which accepts the string from R and prints it.
> >> But when I am calling .C("main","hello");
> >> it is printing any random thing.
> >> My C function is
> >> void main(char *str)
> >>
> >
> > See Writing R Extensions. The declaration should be char **str.
> >
> > Duncan Murdoch
> >
> > {
> >> Rprintf("%s",str);
> >> }
> >>
> >> Can you help how to achieve this using .C interface?
> >>
> >> Thanks
> >> Jaimin
> >>
> >> [[alternative HTML version deleted]]
> >>
> >> ______________________________________________
> >> R-help@r-project.org mailing list
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide
> >>
http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> >> and provide commented, minimal, self-contained, reproducible code.
> >>
> >
> >
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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