Lo standard del C prevede i seguenti tipi dati elementari:
void
/* tipi interi */
char
signed char
unsigned char
short
short int
signed short int
unsigned short
unsigned short int
int
signed
signed int
unsigned
unsigned int
long
signed long
long int
signed long int
unsigned long
unsigned long int
/* lo standard 89 non supporta long long */
long long
signed long long
long long int
signed long long
/* tipi floating */
float
double
long double
/* tipo booleano */
_Bool
/* tipi complessi */
float _Complex
double _Complex
long double _Complex
/*
float _Imaginary
double _Imaginary
long double _Imaginary ib; questi ultimi tre possono non essere
implementati (gcc per esempio non li accetta */