🚀 go-pugleaf

Charles Ofria (charles@rigel.krl.caltech.edu) wrote:
: Greetings,

: 	I've been working on a program with a curses interface for quite
: some time now, and it is working perfectly on the Alpha and HP machines
: which I primarily use.  

: view.cc:18: `SIGINT' undeclared (first use this function)
: view.cc:18: warning: implicit declaration of function `int signal(...)'

Looks to me like you need to:

#include <signal.h>


In C++, you should declare all your functions (with prototypes) before you
try to use them.  Some commonly used functions are declared in <unistd.h>,
so you might try including that.  If you've included all the files indicated
in the manual page, and you still get this warning, try the following:

extern "C" {
  // declare functions here
}

Put this outside of any function scope.  

Basically, C++ functions are not the same as C functions, so you need to
declare them as such.

The curses manual is long and complicated, and I don't feel like looking it
up, so here's an example from some code of mine that uses sockets:

extern "C"
{
  extern int sendto(int, char *, int, int, struct sockaddr *, int);
  extern int bind(int s, struct sockaddr *name, int namelen);
  extern int connect(int, struct sockaddr *, int);
  extern int socket(int, int, int);
  extern int getsockname(int, struct sockaddr *, int *);
  extern void bcopy(void *, void *, int);
}

You can do the same thing for your curses library functions.
 
--
Dan Zerkle  zerkle@cs.ucdavis.edu
GCS d(---)(!) p- c++ !l u++ e++(+++) m s++/-- !n h+(--) f g+++(-) w+ t+ r(-) y+
You call some place "Paradise" -- Kiss it goodbye.