C# Built-in Types

The following table lists the C# built-in types, along with common aliases and default values:

C# type	Alias(es)	Range	Default Value
bool	Boolean	true or false	false
int8	sbyte	-128 to 127	0
uint8	byte	0 to 255	0
int16	short	-32768 to 32767	0
uint16	ushort	0 to 65535	0
float32	float, single	precision up to seven digits	0
int32	int	-2147483648 to 2147483647	0
uint32	uint	0 to 4294967295	0
float64	double	precision up to fifteen digits	0
int64	long	-9223372036854775808 to 9223372036854775807	0
uint64	ulong	0 to 18446744073709551615	0
string		a sequence of zero or more Unicode characters	null

For more information about any of these built-in types, it is recommended to view Microsoft’s “Built-in types (C# reference)” documentation page.