||Integer type specifier
simple-type-specifier := int
The int type specifier denotes an integral type.
Alone, it represents a signed integer whose size is the natural size
of an integer on the host platform. With the short
or long specifier, it represents an integer type
whose range is possibly smaller or larger than that of plain
int. With the unsigned
specifier, it represents an unsigned type. The
signed specifier is allowed, but it is the
default, so it is rarely used with int.
type, unsigned, Chapter 2