How does a union work in C?

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 any given time. Unions provide an efficient way of using the same memory location for multiple-purpose.

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What is the union in C?

C Union. Union is an user defined datatype in C programming language . It is a collection of variables of different datatypes in the same memory location. We can define a union with many members, but at a given point of time only one member can contain a value.

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What are structures and unions in C?

Structure is the container defined in C to store data variables of different type and also supports for the user defined variables storage. On other hand Union is also similar kind of container in C which can also holds the different type of variables along with the user defined variables.

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