Develop a program that fork() a child process. Let the parent process run Program Example 4.4 in Lecture 4 using execl(). Let the child process use system call int kill(pid_t pid, int sig) to deliver signal SIGINT and signal SIGHQUIT to the parent process. Let the child process sleep 3 seconds between delivering signal SIGINT and signal SIGHQUIT.

Program Example 4.4 is as follows:

/*

Catching a signal

*/

#include

#include

#include

#include

int main() {

int i;

void signal_catcher(int);

if (signal(SIGINT, signal_catcher) ==SIG_ERR)

{

perror(SIGINT);

exit(1);

}

if (signal(SIGQUIT, signal_catcher) ==SIG_ERR) {

perror(SIGQUIT);

exit(2);

}

for (i=0; ; ++i) {

printf(%i , i);

sleep(1);

}

}

void signal_catcher(int the_sig) {

signal(the_sig, signal_catcher); /*reset*/

printf( Signal %d received. , the_sig);

if (the_sig == SIGQUIT)

exit(3);

}