C# Data Types Quiz

Study Notes

Data Types in C#

Two primary categories: value types and reference types.
Value types hold their data directly, while reference types store a pointer to the data's memory location.

Value Types

Examples of value types include struct.
Each value type has its own memory allocation, holding the actual data.

Reference Types

Example of reference types includes class, interface, and delegate.
They are stored in the heap and contain a pointer to the actual data's memory location.

Strings in C#

Strings are immutable, meaning once created, their contents cannot be modified.
Strings are considered reference types as they do not hold the data directly within their own memory allocation.

Records in C#

Records can be either value types (as structs) or reference types (as classes).
They provide a way to define immutable data structures.

Memory Allocation Differences

Value types are typically allocated on the stack, while reference types are allocated on the heap.
Value types contain the actual data; reference types contain a reference to that data's location.

Modification of Strings

Strings in C# cannot be modified after creation due to their immutable nature.
Any "modification" results in the creation of a new string instance.

Arrays in C#

Arrays are classified as non-primitive types and are considered reference types.
Although they may behave similarly to value types in syntax, they store references to their elements in the heap.

Description

Test your knowledge on the main categories of data types in C#. This quiz covers fundamental concepts, including value types, reference types, and their characteristics. Perfect for beginners and those looking to refresh their understanding of C#.