What are the two main categories of data types in c#?

Data type classification of C

#The data types in C# are mainly divided into two categories:

1. Value type

Value types are stored on the stack, directly containing a copy of the data. Changing the value of a value type variable does not affect the original value. Value types include the following:

• Numeric types (int, double, float, decimal, etc.)
• Boolean type (bool)
• char type
• Enumeration type
• Structure (struct)

2. Reference type

Reference type is stored in the heap,IndirectPoint to data by reference. Changing the data pointed to by a reference type variable affects the original data. Reference types include the following:

• Class (class)
• Interface (interface)
• Array (array)
• Tuple (tuple )
• Delegate

The difference between value types and reference types

• Memory management:Value types allocate memory directly on the stack, while reference types allocate memory indirectly on the heap.
• Assignment: When assigning a value type, a copy of the data will be created, and when assigning a reference type, only a reference copy pointing to the data will be created.
• Modability: Value types cannot be modified, while reference types can modify the data they point to.

Select data type

When selecting a data type, you need to consider the characteristics and purpose of the data. For data that needs to be stored that is small and changes infrequently, using value types is more efficient. For data that needs to be stored that is large or changes frequently, reference types are more appropriate.

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