What is union with example in C?

The first one is stored at the beginning of the struct, the second is stored after that, and so on . Unions only allocate enough space to store the largest field listed, and all fields are stored at the same space . Syntax for declaring a union is same as that of declaring a structure except the keyword struct.

We use the union keyword to define unions. Here’s an example: union car { char name[50]; int price; }; The above code defines a derived type union car .

Advertisements. 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 …

Struct keyword is used to create structures in C programming. Structures in C are used to group different data types to organize the data in a structural way. For example, we are storing employee details such as name, id, age, address, and salary. From the names, you can understand that they are not the same data type.