Question

difference between structure and union ​

Answer 1

Answer:

             STRUCTURE

• The separate memory location is allotted to each member of the 'structure'.                

• struct struct_name{

         type element1;

         type element2;

         .

         .

         } variable1, variable2, ...;

• 'struct'
• Size of Structure= sum of size of all the data members.
• Stores distinct values for all the members.
• A 'structure' stores multiple values, of the different members, of the 'structure'.
• Provide single way to view each memory location.
• No Anonymous feature.

                                              union

• All members of the 'union' share the same memory location.

• union u_name{

        type element1;

       type element2;

        .

        .

       } variable1, variable2, ...;

• 'union'
• Size of Union=size of the largest members.
• Stores same value for all the members.
• A 'union' stores a single value at a time for all members.
• Provide multiple way to to view same memory location.
• Anonymous union can be declared.