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

// Headers for wait
#include <sys/types.h>
#include <sys/wait.h>

using namespace std;


int main( int argc, char * argv[] )
{

  cout << "Original Process: PID=" << getpid() << " PPID=" << getppid() << endl;

  int pid = fork();
  if( pid != 0 ) {
    // This is the parent process
    cout << "Parent Process: PID=" << getpid() << " PPID=" << getppid() << endl;
    int status;
    pid = wait( &status );
    cout << "Parent Process: Child process " << pid << " terminated with status: " << (status >> 8) << endl;
  }
  else {
    // This is the child process
    cout << "Child Process: PID=" << getpid() << " PPID=" << getppid() << endl;
    cout << "Child Process calling exec" << endl;
    if( execl( "./prog.exe", "./prog", (char*)NULL ) == -1 ) {
      cout << "Error executing" << endl;
    }
  }

  cout << "Terminating Process PID=" << getpid() << endl;
  return 1;
}