10a.c

/*
============================================================================
Name : 10a
Author : Piyush Singh
Description : Write a separate program using sigaction system call to catch the following signals.
a. SIGSEGV
b. SIGINT
c. SIGFPE
Date: 19th Sep, 2025.
============================================================================
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

void segv_handler(int sig) 
{
    printf("🚨 Caught SIGSEGV (Segmentation Fault)\n");
    exit(1);
}

int main() 
{
    struct sigaction sa;
    sa.sa_handler = segv_handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;

    sigaction(SIGSEGV, &sa, NULL);

    int *ptr = NULL;
    *ptr = 42; // Intentional segmentation fault

    return 0;
}

/*
Output:
╰─ ./10a                                                                      ─╯
🚨 Caught SIGSEGV (Segmentation Fault)
*/