union
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Category
Syntax
union [<union type name>] {
<type> <variable names> ;
...
} [<union variables>] ;
Description
Use unions to define variables that share storage space.
The compiler allocates enough storage in a_number to accommodate the largest element in the union.
Unlike a struct, the members of a union occupy the same location in memory. Writing into one overwrites all others.
Use the record selector (.) to access elements of a union .