diff --git a/inc/inttypes.h b/inc/inttypes.h
index 2fa7526..a60e0fc 100644
--- a/inc/inttypes.h
+++ b/inc/inttypes.h
@@ -169,4 +169,73 @@
 #define PRIXPTR     _specptr "X"
 #define PRIXMAX     _specmax "X"
 
-// TODO: scan formats for signed and unsigned integers
+#define SCNd8       _spec8   "d"
+#define SCNd16      _spec16  "d"
+#define SCNd32      _spec32  "d"
+#define SCNd64      _spec64  "d"
+#define SCNdFAST8   _spec8f  "d"
+#define SCNdFAST16  _spec16f "d"
+#define SCNdFAST32  _spec32f "d"
+#define SCNdFAST64  _spec64f "d"
+#define SCNdLEAST8  _spec8l  "d"
+#define SCNdLEAST16 _spec16l "d"
+#define SCNdLEAST32 _spec32l "d"
+#define SCNdLEAST64 _spec64l "d"
+#define SCNdPTR     _specptr "d"
+#define SCNdMAX     _specmax "d"
+#define SCNi8       _spec8   "i"
+#define SCNi16      _spec16  "i"
+#define SCNi32      _spec32  "i"
+#define SCNi64      _spec64  "i"
+#define SCNiFAST8   _spec8f  "i"
+#define SCNiFAST16  _spec16f "i"
+#define SCNiFAST32  _spec32f "i"
+#define SCNiFAST64  _spec64f "i"
+#define SCNiLEAST8  _spec8l  "i"
+#define SCNiLEAST16 _spec16l "i"
+#define SCNiLEAST32 _spec32l "i"
+#define SCNiLEAST64 _spec64l "i"
+#define SCNiPTR     _specptr "i"
+#define SCNiMAX     _specmax "i"
+#define SCNo8       _spec8   "o"
+#define SCNo16      _spec16  "o"
+#define SCNo32      _spec16  "o"
+#define SCNo64      _spec64  "o"
+#define SCNoLEAST8  _spec8l  "o"
+#define SCNoLEAST16 _spec16l "o"
+#define SCNoLEAST32 _spec32l "o"
+#define SCNoLEAST64 _spec64l "o"
+#define SCNoFAST8   _spec8f  "o"
+#define SCNoFAST16  _spec16f "o"
+#define SCNoFAST32  _spec32f "o"
+#define SCNoFAST64  _spec64f "o"
+#define SCNoPTR     _specptr "o"
+#define SCNoMAX     _specmax "o"
+#define SCNu8       _spec8   "u"
+#define SCNu16      _spec16  "u"
+#define SCNu32      _spec16  "u"
+#define SCNu64      _spec64  "u"
+#define SCNuLEAST8  _spec8l  "u"
+#define SCNuLEAST16 _spec16l "u"
+#define SCNuLEAST32 _spec32l "u"
+#define SCNuLEAST64 _spec64l "u"
+#define SCNuFAST8   _spec8f  "u"
+#define SCNuFAST16  _spec16f "u"
+#define SCNuFAST32  _spec32f "u"
+#define SCNuFAST64  _spec64f "u"
+#define SCNuPTR     _specptr "u"
+#define SCNuMAX     _specmax "u"
+#define SCNx8       _spec8   "x"
+#define SCNx16      _spec16  "x"
+#define SCNx32      _spec32  "x"
+#define SCNx64      _spec64  "x"
+#define SCNxLEAST8  _spec8l  "x"
+#define SCNxLEAST16 _spec16l "x"
+#define SCNxLEAST32 _spec32l "x"
+#define SCNxLEAST64 _spec64l "x"
+#define SCNxFAST8   _spec8f  "x"
+#define SCNxFAST16  _spec16f "x"
+#define SCNxFAST32  _spec32f "x"
+#define SCNxFAST64  _spec64f "x"
+#define SCNxPTR     _specptr "x"
+#define SCNxMAX     _specmax "x"