How do you declare a structure variable?

You begin a structure declaration with the Structure Statement, and you end it with the End Structure statement . Between these two statements you must declare at least one element. The elements can be of any data type, but at least one must be either a nonshared variable or a nonshared, noncustom event.

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Is struct and union same?

The syntaxes to declare or define a structure and a union are similar . The major difference between a structure and a union is storage. In a structure, each member has its distinct storage location while the members of a union utilize a shared memory location that is equal to the size of its largest data member.

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How do unions 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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