Union(Use of Union)

Uses of Union

Union, like structure, contain members whose individual data type may differ to each other.
But the members that compose a union share the same storage area within the computer's memory, whereas each
member within a structure is assigned its own unique storage area.
Thus, union are used to conserve memory.

1. Unions are useful for application involving multiple
members, where value need not to be assigned to all of
the members at any one time.

2. Unions are useful whenever there is a requirement to
access the same memory location in more than one way. etc.