Data Types

Data Types

Data types are sets (ranges) of values that have similar characteristics. For instance byte type specifies the set of integers in the range of [0 … 255].

Characteristics

Data types are characterized by:
- Name – for example, int;
- Size (how much memory they use) – for example, 4 bytes;
- Default value – for example 0.

Types

Basic data types in C# are distributed into the following types:
- Integer types – sbyte, byte, short, ushort, int, uint, long, ulong;
- Real floating-point types – float, double;
- Real type with decimal precision – decimal;
- Boolean type – bool;
- Character type – char;
- String – string;
- Object type – object.
These data types are called primitive (built-in types), because they are embedded in C# language at the lowest level. The table below represents the above mentioned data types, their range and their default values: