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


int memento()
{
    int a=0;
    MessageBoxA(NULL,"Memento mori","POSIX Signal",NULL);
    return 0;
}
void fall()
{
      int* p = 0x00000000;
      *p = 13;
}
void posix_death_signal(int signum)
{
    memento();
    signal(signum, SIG_DFL);
    exit(3);
}


int main(int argc, char *argv[])
{
    signal(SIGSEGV, posix_death_signal);
    fall();
}