#include <unistd.h>
#include <stdio.h>
#include <sys/wait.h>

int main() {
  pid_t pid;
  printf("program started\n");
  pid = fork();
  if (pid < 0) { // error, fork failed
    printf("fork failed\n");
  } else if (pid == 0) { // child process
    execlp("/bin/ls", "/bin/ls", 0); // overwrite self
    printf("never executes\n");
  } else { // parent process
    printf("this is the parent\n");
  }
  return 0;
}