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Converting from text: [d] %f %F %g %G %e %E ... (C99) – maximum possible value of unsigned integer types: unsigned char, unsigned short, unsigned int, unsigned long
The flag h in %hi indicates conversion to a short and hh conversion to a char. %u : Scan for decimal unsigned int (Note that in the C99 standard the input value minus sign is optional, so if a minus sign is read, no errors will arise and the result will be the two's complement of a negative number, likely a very large value.
Unsigned range 1 byte 8 bits Byte, octet, minimum size of char in C99( see limits.h CHAR_BIT) −128 to +127 0 to 255 2 bytes 16 bits x86 word, minimum size of short and int in C −32,768 to +32,767 0 to 65,535 4 bytes 32 bits
For Integers, the unsigned modifier defines the type to be unsigned. The default integer signedness outside bit-fields is signed, but can be set explicitly with signed modifier. By contrast, the C standard declares signed char, unsigned char, and char, to be three distinct types, but specifies that all three must have the same size and alignment.
Implicit type conversion, also known as coercion or type juggling, is an automatic type conversion by the compiler. Some programming languages allow compilers to provide coercion; others require it. In a mixed-type expression, data of one or more subtypes can be converted to a supertype as needed at runtime so that the program will run correctly.
This can also be thought of as the most significant bit representing the inverse of its value in an unsigned integer; in an 8-bit unsigned byte, the most significant bit represents the 128ths place, where in two's complement that bit would represent −128. In two's-complement, there is only one zero, represented as 00000000.
All C integer types have signed and unsigned variants. If signed or unsigned is not specified explicitly, in most circumstances, signed is assumed. However, for historic reasons, plain char is a type distinct from both signed char and unsigned char. It may be a signed type or an unsigned type, depending on the compiler and the character set (C ...
VARIANT_BOOL (short) 12 0x0c VT_VARIANT pvarVal Variant VARIANT 13 0x0d VT_UNKNOWN punkVal Nothing 4: 00000000 IUnknown * 14 0x0e VT_DECIMAL decVal DECIMAL 16 0x10 VT_I1 cVal Byte CHAR 17 0x11 VT_UI1 bVal: Byte: 2A: BYTE (unsigned char) 18 0x12 VT_UI2 uiVal WORD (unsigned short) 19 0x13 VT_UI4 ulVal DWORD (unsigned int) 20 0x14 VT_I8 hVal 21 ...