Primitives

Primitives#

The base set, with sizes you should not assume.

Type	Notes
`char`	1 byte. Signedness is implementation-defined; `signed char` and `unsigned char` are explicit.
`short`	at least 16 bits.
`int`	at least 16; typically 32 on every modern host.
`long`	at least 32. 32-bit on Windows x64; 64-bit on Linux x64.
`long long`	at least 64.
`float`	IEEE 754 single (almost everywhere).
`double`	IEEE 754 double.
`long double`	extended precision; 80-bit on x86, same as `double` elsewhere.
`_Bool` / `bool`	0 or 1. `bool` requires `<stdbool.h>` (or C23).
`void`	“no type”. `void *` is a generic pointer.

Sign forms.

signed   int n;
unsigned int u;
short    s;            /* signed short */
unsigned short us;
long long ll;
unsigned long long ull;