DATA TYPES IN C#

DATA TYPES IN C#:-

C# provides various built =-in data types. Built-in data types are the predefined data types.

The following table lists some f the built-in data types.

S.NO	data type	RANGE
1	byte	0 TO 255
2	sbtype	-128 TO 127
3	short	-32,768 TO 32,767
4	ushort	0 TO 65535
5	int	-2,147,483,648 to 2,147,483,648
6	uint	0 to 4,294,967,295
7	long	-9,223,372,036,854,775,808 to 9,223,372,036,854,775,808
8	ulong	0 to 18,446,744,073,709,551,615
9	float	-3.402823e38 to 2823e38
10	double	-1.79769313486232e308 to 76931386232e308
11	decimal	-792281625142643375593543950335 to 8162514264337593543950335
12	char	A Unicode Character
13	string	A string of Unicode characters
14	bool	True or false
15	object	An object

NOTE:-Built-in data types are represented at the machine level. The storage requirement, therefore, depends on the hardware. The #Bytes column in the preceding table depicts the bytes required to store the value in the memory.

c# also provides user-defined data types. You will learn about user-defined data types in subsequent chapters.

TYPES OF DATA TYPES:-

C# supports two types of data types. The types of data types supported by c# are:-

1.) VALUE TYPES:- They directly contain data. Some examples of the value types are char, int, and float, which can be used for storing alphabets, integers, and floating point number, respectively. When you declare an int variable, the system allocates memory to store the value. The following figure shows the memory allocation of an int variables.

2.) REFERENCE TYPES:- The reference types do not maintain data but they contain a reference to the variable. Which are stored in memory. Using more than one variable, you can use the reference types to refer to a memory location. This means that if the value in the memory location is modified by one of the variables, the other variables automatically reflect the changed value. The example of a references type is string data type.