title: header file for sound() in C in linux?
body: <p>I am trying to use these functions in C in Linux based system or OS:
      sound()
      nosound()
      dealy()</p>
  
  <p>I can execute it on my Windows OS with dos.h header file but dos.h wont work on Linux based system. </p>
  
  <p>I tried unistd.h, it didnt work. I also tried sound.h, eader file not found error. which header file should I include?</p>