제가 지금 c를 배우고 있는데요...개념은 너무 없고 응용이 대다수더군요....그리고 타학과도 c는 어느정도 하고그러던데 이 분야에서 진입장벽이 높고 개념의 양이 많은건 어디쪽이죠?