43 day


Unions

The Union is a user-defined data type in C language that can contain elements of the different data types just like structure. But unlike structures, all the members in the C union are stored in the same memory location. Due to this, only one member can store data at the given instance.

Syntax of Union in C
The syntax of the union in C can be divided into three steps which are as follows:

C Union Declaration
In this part, we only declare the template of the union, i.e., we only declare the members’ names and data types along with the name of the union. No memory is allocated to the union in the declaration.

union union_name {
    datatype member1;
    datatype member2;
    ...
};

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