This exercise shows the idea of how to use one user-defined signal handler to handle two signals.

Question

This exercise shows the idea of how to use one user-defined signal handler to handle two signals. The two signals chosen for this exercise are SIGINT and SIGQUIT. Read (or Google) the descriptions of these two signals on page 319 and page 320 in the textbook. Note this idea applies to other signals as well. What you need to do is to write your own one signal handler function and install this handler for both SIGINT and SIGQUIT. When your signal handler is invoked, print out the signal no. (which is the argument to your 2 user-defined signal handler function) so that we know which signal has been caught.

Answer 1

#include <stdio.h>

#include <signal.h>

/*Handler for SIGINT and SIGQUIT

/ Keyboard shortcuts: SIGINT - ctrl+c, SIGQUIT - ctrl+\ */

void handlerFunction(int sig)

{

printf("Signal no: %d\n", sig);

}

int main()

{

signal(SIGINT, handlerFunction);

signal(SIGQUIT, handlerFunction);

int i = 1;

while (i);

return 0;

}