5 Lexical conventions [lex]

5.13 Literals [lex.literal]

5.13.2 Integer literals [lex.icon]

Table 8: Types of integer-literals[tab:lex.icon.type]
none
int
int
long int
unsigned int
long long int
long int
unsigned long int
long long int
unsigned long long int
u or U
unsigned int
unsigned int
unsigned long int
unsigned long int
unsigned long long int
unsigned long long int
l or L
long int
long int
long long int
unsigned long int
long long int
unsigned long long int
Both u or U
unsigned long int
unsigned long int
and l or L
unsigned long long int
unsigned long long int
ll or LL
long long int
long long int
unsigned long long int
Both u or U
unsigned long long int
unsigned long long int
and ll or LL
z or Z
the signed integer type corresponding
the signed integer type
  to std​::​size_­t ([support.types.layout])
  corresponding to std​::​size_­t
std​::​size_­t
Both u or U
std​::​size_­t
std​::​size_­t
and z or Z