#include <iostream>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

using namespace std;

int main() {
     bool done{false};
     srand(time(nullptr));
     int count{1};

     pid_t forkId{fork()};
     switch(forkId) {
        case -1: 
           perror("Error, Fork");
           exit(1);
        case 0:
            cout << "Child created " << getpid() << endl;

            while (not done) {
               usleep(10000);

               float exitChance = rand() / static_cast<float>(RAND_MAX);
               count++;
               if (exitChance > .9999) {
                  done = true;
               }
               if (count % 1000 == 0) {
                   cout << "\tChild here, I got 1000 iterations in" << endl;
               }
               usleep(300);
            }
            cout << "\t\t HA HA I got done before you killed me" << endl;

            exit(4);
        default:
            int status;
            pid_t childPid;

            while (not done) {
               int flags { WUNTRACED | WCONTINUED | WNOHANG};
               childPid = waitpid(forkId, &status, flags);

               if (childPid != 0) {
                   if (WIFEXITED(status)) {
                       cout << "exited, status=" << WEXITSTATUS(status) << endl;
                       done = true;
                   } else if (WIFSIGNALED(status)) {
                       cout << "killed by signal " <<  WTERMSIG(status) << endl;
                       done = true;
                   } else if (WIFSTOPPED(status)) {
                       cout << "stopped by signal " << WSTOPSIG(status) << endl;
                   } else if (WIFCONTINUED(status)) {
                       cout << "continued" << endl;
                   }
               } else {
                  usleep(1000000);
                  cout << "Parent finished work " << endl;
               }

            }

            break;
     }
     return 0;
}