What is a union C++?

C unions allow data members which are mutually exclusive to share the same memory . This is quite important when memory is valuable, such as in embedded systems. Unions are mostly used in embedded programming where direct access to the memory is needed.

A union is a special class type that can hold only one of its non-static data members at a time . The class specifier for a union declaration is similar to class or struct declaration: union attr class-head-name { member-specification }

A union is a special class type that can hold only one of its non-static data members at a time . The class specifier for a union declaration is similar to class or struct declaration: union attr class-head-name { member-specification }

C unions allow data members which are mutually exclusive to share the same memory . This is quite important when memory is valuable, such as in embedded systems. Unions are mostly used in embedded programming where direct access to the memory is needed.