The Difference between Structs and Unions in SystemVerilog

The main difference between structs and unions in SystemVerilog lies in how they store and access data. Structs are used to group related variables together under one name, allowing you to access each variable individually. On the other hand, unions allow multiple variables to share the same memory location, meaning they can only hold one value at a time.

Structs are commonly used for creating complex data structures, while unions are useful for saving memory space when only one value is needed at a time. Understanding when to use structs and unions is essential for efficient SystemVerilog programming.

Structs provide a way to create a composite data type that can hold multiple variables, each with its own distinct value. Unions, on the other hand, are used when you want multiple variables to share the same memory location, ensuring that they all reference the same value at any given time.

Overall, the key distinction between structs and unions in SystemVerilog is how they organize and store data, with structs enabling individual access to variables and unions allowing for shared memory locations.