#include <iostream>
#include <unistd.h>

using namespace std;

string role{"none"};

int main() {

    int a{1};
    int * b{new(int)};
    *b = 5;
    pid_t pid;

    cout << "Before fork, a = " << a << " *b = " << *b
         << " b =  "  << b << " role " << role << endl; 
    cout << endl;
     
    pid_t forkPid{fork()};
    if (forkPid != 0) {
       role = "parent";
    } else {
       role = "child";
    }


    pid = getpid();

    cout << role << " here, my pid is " << pid 
         << " and the forkpid is " << forkPid << endl;
    cout << endl;

    cout << role << " after fork, a = " << a << " *b = " << *b 
         << " b =  "  << b << " role " << role << endl; 
    cout << endl;

    a = pid% 100;
    * b = pid;
    cout << role << " after change, a = " << a  << " *b = " << *b
         << " b =  "  << b << " role " << role << endl; 
    cout << endl;
    delete(b);

    return 0;
}