Re: [O] Capturing output from C/C++

[John Kitchin]

I think you need to tangle the file, compile it and run the executable
in a shell block.

Here is a Fortran example:

http://kitchingroup.cheme.cmu.edu/blog/2014/02/04/Literate-programming-example-with-Fortran-and-org-mode/

I have done similar things with C, java, etc... before.

I don't know of a built in way to type C-c C-c and have it do all those
things for you.


Roger Mason writes:

 Hello,

 I have a short C++ program:

 #+BEGIN_SRC cpp :flags -lm :results output
 #include iostream
 #include fstream
 #include cmath  // for ceil
 #include cstdlib// for atof

   double f (double fv, double o, int i) {
 return fv / 2.0 + (1.0 - o) * fv * i;
   }

 int num (double d, double fv, double o) {
   return (int)ceil( d / ((1.0 - o) * fv ));
   }

 int main (int argc, char* argv[]) {
 if ( argc  6 ) {
   std::cout  Usage:\n  std::endl;
   std::cout  grid w fovx ox h fovy oy\n  std::endl;
   return 1;
 }
 ...
 #+END_SRC

 that outputs some data to stdout.

 So far I have not been able to capture the output of the program back
 into to my org buffer.

 Is that possible and, if so, how?

 Thanks,
 Roger
 Org-mode version 8.2.6

--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu

Re: [O] Capturing output from C/C++

[Thierry Banel]

It might be due to the return 1; statement.
Change it to return 0; and try again.


Le 05/03/2015 17:27, Roger Mason a écrit :
 Hello,

 I have a short C++ program:

 #+BEGIN_SRC cpp :flags -lm :results output
 #include iostream
 #include fstream
 #include cmath  // for ceil
 #include cstdlib// for atof

   double f (double fv, double o, int i) {
 return fv / 2.0 + (1.0 - o) * fv * i;
   }

 int num (double d, double fv, double o) {
   return (int)ceil( d / ((1.0 - o) * fv ));
   }

 int main (int argc, char* argv[]) {
 if ( argc  6 ) {
   std::cout  Usage:\n  std::endl;
   std::cout  grid w fovx ox h fovy oy\n  std::endl;
   return 1;
 }
 ...
 #+END_SRC

 that outputs some data to stdout.

 So far I have not been able to capture the output of the program back
 into to my org buffer.

 Is that possible and, if so, how?

 Thanks,
 Roger
 Org-mode version 8.2.6

[O] Capturing output from C/C++

[Roger Mason]

Hello,

I have a short C++ program:

#+BEGIN_SRC cpp :flags -lm :results output
#include iostream
#include fstream
#include cmath// for ceil
#include cstdlib  // for atof

  double f (double fv, double o, int i) {
return fv / 2.0 + (1.0 - o) * fv * i;
  }

int num (double d, double fv, double o) {
  return (int)ceil( d / ((1.0 - o) * fv ));
  }

int main (int argc, char* argv[]) {
if ( argc  6 ) {
  std::cout  Usage:\n  std::endl;
  std::cout  grid w fovx ox h fovy oy\n  std::endl;
  return 1;
}
...
#+END_SRC

that outputs some data to stdout.

So far I have not been able to capture the output of the program back
into to my org buffer.

Is that possible and, if so, how?

Thanks,
Roger
Org-mode version 8.2.6

Re: [O] Capturing output from C/C++

[Nick Dokos]

Roger Mason rma...@mun.ca writes:

 Hello,

 I have a short C++ program:

 #+BEGIN_SRC cpp :flags -lm :results output
 #include iostream
 #include fstream
 #include cmath  // for ceil
 #include cstdlib// for atof

   double f (double fv, double o, int i) {
 return fv / 2.0 + (1.0 - o) * fv * i;
   }

 int num (double d, double fv, double o) {
   return (int)ceil( d / ((1.0 - o) * fv ));
   }

 int main (int argc, char* argv[]) {
 if ( argc  6 ) {
   std::cout  Usage:\n  std::endl;
   std::cout  grid w fovx ox h fovy oy\n  std::endl;
   return 1;
 }
 ...
 #+END_SRC

 that outputs some data to stdout.

 So far I have not been able to capture the output of the program back
 into to my org buffer.

 Is that possible and, if so, how?


You call your program with no arguments, which means that it returns 1,
which is interpreted as an error. Try returning 0 or fix the call so
that it goes through the path that returns 0.

Nick