| CCc | GHC.Posix |
| CChar | Foreign.C Foreign.C.Types |
| CClock | Foreign.C Foreign.C.TypesISO |
| CDev | GHC.Posix |
| CDir | GHC.Posix |
| CDirent | GHC.Posix |
| CDouble | Foreign.C Foreign.C.Types |
| CFLock | GHC.Posix |
| CFile | Foreign.C Foreign.C.TypesISO |
| CFloat | Foreign.C Foreign.C.Types |
| CFpos | Foreign.C Foreign.C.TypesISO |
| CGid | GHC.Posix |
| CGroup | GHC.Posix |
| CIno | GHC.Posix |
| CInt | Foreign.C Foreign.C.Types |
| CJmpBuf | Foreign.C Foreign.C.TypesISO |
| CLDouble | Foreign.C Foreign.C.Types |
| CLLong | Foreign.C Foreign.C.Types |
| CLconv | GHC.Posix |
| CLong | Foreign.C Foreign.C.Types |
| CMode | GHC.Posix |
| CNlink | GHC.Posix |
| COff | GHC.Posix |
| CPasswd | GHC.Posix |
| CPid | GHC.Posix |
| CPtrdiff | Foreign.C Foreign.C.TypesISO |
| CSChar | Foreign.C Foreign.C.Types |
| CShort | Foreign.C Foreign.C.Types |
| CSigAtomic | Foreign.C Foreign.C.TypesISO |
| CSigaction | GHC.Posix |
| CSigset | GHC.Posix |
| CSize | Foreign.C Foreign.C.TypesISO |
| CSpeed | GHC.Posix |
| CSsize | GHC.Posix |
| CStat | GHC.Posix |
| CString | Foreign.C Foreign.C.String |
| CStringLen | Foreign.C Foreign.C.String |
| CTcflag | GHC.Posix |
| CTermios | GHC.Posix |
| CTime | Foreign.C Foreign.C.TypesISO |
| CTm | GHC.Posix |
| CTms | GHC.Posix |
| CUChar | Foreign.C Foreign.C.Types |
| CUInt | Foreign.C Foreign.C.Types |
| CULLong | Foreign.C Foreign.C.Types |
| CULong | Foreign.C Foreign.C.Types |
| CUShort | Foreign.C Foreign.C.Types |
| CUid | GHC.Posix |
| CUtimbuf | GHC.Posix |
| CUtsname | GHC.Posix |
| CWchar | Foreign.C Foreign.C.TypesISO |
| CalendarTime | System.Time |
| Chan | Control.Concurrent Control.Concurrent.Chan |
| Char | Data.Char GHC.Base GHC.Exts Prelude |
| CharParser | Text.ParserCombinators.Parsec Text.ParserCombinators.Parsec.Char |
| ClockTime | System.Time |
| Column | Text.ParserCombinators.Parsec Text.ParserCombinators.Parsec.Pos |
| Complex | Data.Complex |
| Config | Debug.QuickCheck |
| Cont | Control.Monad.Cont |
| ContT | Control.Monad.Cont |
