How do you structure a union?

A struct is a block of memory that stores several data objects , where those objects don’t overlap. A union is a block of memory that stores several data objects, but has only storage for the largest of these, and thus can only store one of the data objects at any one time.

In C11 standard of C, anonymous Unions and structures were added. Anonymous unions/structures are also known as unnamed unions/structures as they don’t have names. Since there is no names, direct objects(or variables) of them are not created and we use them in nested structure or unions.6 Eki 2021

c structure unions. When a variable is associated with a union, the compiler allocates the memory by considering the size of the largest memory . So, size of union is equal to the size of largest member. so it means Altering the value of any of the member will alter other member values.

Your union’s organizational structure is embodied in your Constitution and By-laws . The organizational set-up of a union is composed of four branches: the General membership, the Executive Board, the Executive Officers, and the Committees.

Nested Union is Union which has another Union as a member in that Union. A member of Union can be Union itself , this what we call as Nested Union .

You can declare a structure or union type separately from the definition of variables of that type, as described in Structure and union type definition and Structure and union variable declarations; or you can define a structure or union data type and all variables that have that type in one statement, as described in …