Update C headers to be C++

include/stdint.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+using int8_t  = signed char;    
+using uint8_t = unsigned char;
+
+using int16_t  = short;
+using uint16_t = unsigned short;
+
+using int32_t  = int;
+using uint32_t = unsigned int;
+
+using int_least8_t  = signed char;
+using uint_least8_t = unsigned char;
+
+using int_least16_t  = short;
+using uint_least16_t = unsigned short;
+
+using int_least32_t  = int;
+using uint_least32_t = unsigned int;
+
+using int_fast8_t  = signed char;
+using uint_fast8_t = unsigned char;
+
+using int_fast16_t  = int;
+using uint_fast16_t = unsigned int;
+
+using int_fast32_t  = int;
+using uint_fast32_t = unsigned int;
+
+using intmax_t  = signed int;
+using uintmax_t = unsigned int;
+
+using intptr_t  = signed long;
+using uintptr_t = unsigned long;