8d.c

/*
============================================================================
Name : 8d
Author : Piyush Singh
Description : Write a separate program using signal system call to catch the following signals.
a. SIGSEGV
b. SIGINT
c. SIGFPE
d. SIGALRM (use alarm system call)
e. SIGALRM (use setitimer system call)
f. SIGVTALRM (use setitimer system call)
g. SIGPROF (use setitimer system call)
Date: 19th Sep, 2025.
============================================================================
*/

#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>

void handler(int sig) 
{
    printf("⏰ Caught SIGALRM (via alarm)\n");
    exit(0);
}

int main() 
{
    signal(SIGALRM, handler);
    alarm(3); // Trigger alarm in 3 seconds

    while (1) 
    {
        printf("⌛ Waiting for alarm...\n");
        sleep(1);
    }

    return 0;
}

/*
Output:
 ./8d                                                                       ─╯
⌛ Waiting for alarm...
⌛ Waiting for alarm...
⌛ Waiting for alarm...
⏰ Caught SIGALRM (via alarm)
*/