uint8t

uint8_t is an unsigned 8-bit integer type defined in the C standard library header stdint.h, and in C++ as std::uint8_t in cstdint. It represents values from 0 to 255 and is provided only if the implementation can supply an exact-width unsigned integer type of 8 bits. On most platforms, uint8_t is a typedef for an underlying type such as unsigned char, but the standard leaves the exact underlying type implementation-defined.

The size of a uint8_t is 8 bits, typically corresponding to one byte. The C standard defines a byte as the storage unit that can hold CHAR_BIT bits, which is usually 8 on modern systems, though not guaranteed by the standard. The primary purpose of uint8_t is to offer a portable way to work with bytes and byte-oriented data, such as buffers, binary file I/O, network protocols, and image or audio data.

Arithmetic with uint8_t participates in integer promotions; operations are performed as at least int width, and the result may be stored back into a uint8_t. This can affect overflow behavior and performance, depending on the target platform and compiler.

Printing and I/O for uint8_t is typically done portably by using macros from inttypes.h (such as PRIu8 and SCNu8) or, when convenient, by casting to an unsigned int for printf-style formats. In C++, streaming operators can handle uint8_t values directly, or you can use std::uint8_t with appropriate types from <cstdint>.

Note on the term uint8t: this is not a standards-defined type in C or C++. It is likely a misspelling of uint8_t. When writing portable code, rely on uint8_t from stdint.h/cstdint.