12c10
<          if ((snd_pcm_open ( &playback_handle, argv[1], SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
---
>          if ((playback_handle = snd_pcm_open (argv[1], SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
17c15
<          if ((snd_pcm_open ( &capture_handle, argv[1], SND_PCM_STREAM_CAPTURE, 0)) < 0) {
---
>          if ((capture_handle = snd_pcm_open (argv[1], SND_PCM_STREAM_CAPTURE, 0)) < 0) {
27c25
<          snd_pcm_hw_params_set_rate_near (playback_handle, hw_params, 44100, 0);
---
>          snd_pcm_hw_params_set_rate_near (playback_handle, hw_params, 44100);
35c33
<          snd_pcm_hw_params_set_rate_near (capture_handle, hw_params, 44100, 0);
---
>          snd_pcm_hw_params_set_rate_near (capture_handle, hw_params, 44100);
45,46c43,44
<                  snd_pcm_writei (playback_handle, pbuf, sizeof (pbuf));
<                  snd_pcm_readi (capture_handle, cbuf, sizeof (cbuf));
---
>                  snd_pcm_write (playback_handle, pbuf, sizeof (pbuf));
>                  snd_pcm_read (capture_handle, cbuf, sizeof (cbuf));