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Equivalent to C's `char` type.
[C's `char` type] is completely unlike [Rust's `char` type]; while Rust's type represents a unicode scalar value, C's `char` type is just an ordinary integer. This type will always be either [`i8`] or [`u8`], as the type is defined as being one byte long.
C chars are most commonly used to make C strings. Unlike Rust, where the length of a string is included alongside the string, C strings mark the end of a string with the character `'\0'`. See [`CStr`] for more information.
[C's `char` type]: https://en.wikipedia.org/wiki/C_data_types#Basic_types
[Rust's `char` type]: ../../primitive.char.html
[`CStr`]: ../../ffi/struct.CStr.html
[`i8`]: ../../primitive.i8.html
[`u8`]: ../../primitive.u8.html
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