text: #include "apue.h"
  
  int globvar = 6;
  
  int main() {
    int var;
    pid_t pid;
  
    var = 88;
    printf("before vfork\n");
    if ((pid = vfork()) < 0) {
      err_sys("vfork error");
    } else if (pid == 0) {
      globvar++;
      var++;
      exit(0);
    }
    printf("pid = %ld, glob = %d, car = %d\n", (long)getpid(), globvar, var);
    exit(0);
  }