#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <signal.h>

int main(void)
{
    int status;
    pid_t fork_pid;

    if ( (fork_pid = fork()) == 0 )
    {
        printf("* I am the son. About to terminate by signal... *\n");
        // Send SIGKILL to this process (self-termination with a signal)
        raise(SIGKILL);  // Alternatively, try SIGTERM, SIGSEGV, etc.
    }
    else if (fork_pid == -1)
    {
        printf("fork() failed!\n");
        exit(2);
    }

    wait(&status); // wait for termination of child process

    // status: full status returned by wait()
    // (status >> 8) & 0xff: higher byte (exit code in normal exit)
    // status & 0xff: lower byte (termination signal or additional info)
    printf("wait status: 0x%x | Exit code: 0x%x | Signal: 0x%x |\n",
            status, (status >> 8) & 0xff, status & 0x7f);

    // Check if child terminated by signal
    if (WIFSIGNALED(status))
    {
        printf("Child was terminated by signal %d\n", WTERMSIG(status));
    }

    return 0;
}