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