Editing C syntax (section)

====Unions====
Unions in C are related to structures and are defined as objects that may hold (at different times) objects of different types and sizes. They are analogous to variant records in other programming languages. Unlike structures, the components of a union all refer to the same location in memory. In this way, a union can be used at various times to hold different types of objects, without the need to create a separate object for each new type. The size of a union is equal to the size of its largest component type.