Let us C Solutions | C Programming | Why use Unions and volatile Qualifier in C Language

What is a Union?

A union is a user-defined data type that allows you to store different data types in the same memory location.
It's similar to a struct, but with a key difference: only one member of a union can hold a value at a time.
It's designed for situations where you need to use the same memory location for multiple purposes, but only one purpose is active at a time.
Key Characteristics:

Shared Memory: All members of a union share the same memory space.
Exclusive Values: Only one member can have a value at any given time. Assigning a value to one member overwrites the previous value of any other member.
Memory Efficiency: Unions can save memory when you need to store mutually exclusive data types.

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