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Union in C Programming Overview
Jul 1, 2024
Lecture Notes: Union CNC Programming
Welcome
Start of the advanced course
We will discuss Union in C Language
Key Topics
Meaning and need of Union
Differentiation between Union and Structure
Basic example of Union
Properties of Union
Union in C Programming
Definition: A data structure where variables share the same memory space
Usage: To conserve memory and for better performance
Construction of Union
All members use the same memory location
Can hold multiple data types
Access: The size of the largest member defines the memory size
Example of Union
Syntax:
union unionName { dataType member1; dataType member2; ... };
Example of memory allocation
Practical Uses and Examples
Real-world applications
Compact and precise memory optimization
Interaction with the compiler
Structs vs Unions
Union: Single memory space, holds the value of one member at a time
Structure: Each member has its own memory space
Usage and limitations
Important Properties
Simplicity in memory allocation
Adjustment of memory size
Usage in multiple versions of code
Conclusion
It's essential to have a clear concept of Union
Helpful in code optimization
Don't forget to ask questions and subscribe
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