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<[email protected]>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]] > >> > >> ______________________________________________ > >> [email protected] 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]] > > ______________________________________________ > [email protected] 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.
______________________________________________ [email protected] 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.
