Oct 25, 2025 · A union is a user-defined data type that can hold different data types, similar to a structure. Unlike structures, all members of a union are stored in the same memory location.

In this tutorial, you'll learn about unions in C programming. More specifically, how to create unions, access its members and learn the differences between unions and structures with the help of examples

In a union, all members share the same memory, which means you can only use one of the values at a time. Most of the time, you will use structs instead of unions, as it can store and access multiple …

A union is a special data type available in C that allows to store different data types in the same memory location. You can define a union with many members, but only one member can contain a value at …

Aug 29, 2011 · Unions are also sometimes used to implement pseudo-polymorphism in C, by giving a structure some tag indicating what type of object it contains, and then unioning the possible types …

Understand unions in C language with easy examples. Learn how to access union members, their syntax, memory allocation, uses, limitations, and more.

Sep 18, 2024 · Using unions effectively can make our program more efficient and help us manage memory more wisely in systems where resources are limited. Let’s explore the concept and use …

Jun 26, 2018 · In this article I will explain what is union, need of union, how to declare, define and access unions in C programming language. We use unions to define a new data type, similar to …

Sep 6, 2024 · In the world of C programming, unions provide a powerful and memory-efficient way to store different data types in the same memory location. This unique feature allows developers to …

May 1, 2024 · A union in C programming is a user-defined data type that allows storing different data types in the same memory location. Unlike structures, where each member has its own memory …