[C]

[..]
  1. CBAUD
  2. CGA
  3. CGAIO
  4. CGA_GET
  5. CHARS
  6. CHAR_BIT
  7. CHAR_MAX
  8. CHAR_MIN
  9. CHECK_LAST_NR
  10. CHILD_MAX
  11. CIBAUD
  12. CLEAR_INTR
  13. CLEAR_TIMER
  14. CLOCAL
  15. CLOCKS_PER_SEC
  16. CMOS_READ
  17. CODE_SPACE
  18. CONST1
  19. CONSTL2E
  20. CONSTL2T
  21. CONSTLG2
  22. CONSTLN2
  23. CONSTPI
  24. CONSTZ
  25. CONS_CURRENT
  26. CONS_GET
  27. CON_COLS
  28. CON_ROWS
  29. COPYBLK
  30. CR0
  31. CR1
  32. CR2
  33. CR3
  34. CRDLY
  35. CREAD
  36. CRTSCTS
  37. CS
  38. CS5
  39. CS6
  40. CS7
  41. CS8
  42. CSIZE
  43. CSTOPB
  44. CT_TO_SECS
  45. CT_TO_USECS
  46. CURRENT
  47. CURRENT_DEV
  48. CURRENT_TIME
  49. C_HUP
  50. C_SPEED
[..]