#include <unistd.h>
#include <sys/wait.h>
#include <iostream>
using namespace std;
 
int main() {
  int status;
  int pid = fork();
  if (pid) {
    cout << "Parent waiting for child\n";
    waitpid(pid, &status, 0);
    cout << "Parent finished waiting for child\n";
  }
  else {
    cout << "Child about to run \"ls -l\"\n";
    char* args[] = {"ls", "-l", NULL};
    execvp(args[0], args);
    cout << "This should never show unles exec didn't work\n";
  }
}