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#include <signal.h>
main()
{
/*
* Declare handler routine so we can use its
* name.
*/
extern int handler();
/*
* Send signal to handler routine.
*/
signal(SIGINT, handler);
/*
* Loop here.
*/
for (;;)
pause();
}
/*
* handler--handle the signal.
*/
handler()
{
/*
* Users of 4.2 and 4.3BSD systems should un-comment
* this line, which will make this program
* behave as if it were on a non-Berkeley system.
*/
/* signal(SIGINT, SIG_DFL); */
printf("OUCH\n");
/*
* Reset the signal to come here again.
*/
signal(SIGINT, handler);
}
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