Unable to playback captured audio using USB sound card

I am trying to capture and play audio using C program. For this I [got this tutorial.]. Here is the program which I am running:- /** * Jan Newmarch */ #define PERIOD_SIZE 1024 #define BUF_SIZE (PERIOD_SIZE * 2) #include #include #include void print_pcm_state(snd_pcm_t *handle, char *name) { switch (snd_pcm_state(handle)) { case SND_PCM_STATE_OPEN: printf("state open %s\n", name); break; case SND_PCM_STATE_SETUP: printf("state setup %s\n", name); break; case SND_PCM_STATE_PREPARED: printf("state prepare %s\n", name); break; case SND_PCM_STATE_RUNNING: printf("state running %s\n", name); break; case SND_PCM_STATE_XRUN: printf("state xrun %s\n", name); break; default: printf("state other %s\n", name); break; } } int setparams(snd_pcm_t *handle, char *name) { snd_pcm_hw_params_t *hw_params; int err; if ((err = snd_pcm_hw_params_malloc (&hw_params)) /etc/modprobe.d/alsa-base.conf Here are the changes :- I replace options snd_usb_audio index=-2 options snd_hda_intel index=-1 with options snd_usb_audio index=-1 options snd_hda_intel index=-2 And I replace # Keep snd-usb-audio from beeing loaded as first soundcard options snd-usb-audio index=-1 with # Keep snd-usb-audio from beeing loaded as first soundcard options snd-usb-audio index=-1 Now, when i run my code , I got this output:- Rate for playback is 48000 period size now 1024 period size 1024 buffer size 2048 Rate for capture is 48000 cannot set channel count (Invalid argument) So, can anyone tell me what else should I do to run my code using sound card. Note:- I run command aplay -l and got this output:- card 0: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 0: ALC221 Analog [ALC221 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0