pointers and union?

[rahulvegi]

union:
- it is hetrogenious collection.
- it reduces memory size compared to structure.
- the union holds any data type even pointers also.
- it takes only highest datatype memory size.
types of pointers:
array of pointers
pointer to pointer

[dgopinath64]

pointer & uion are secondary data types
pointer is used to store the address of variable/value
there are two type of pointer
near pointer
far pointer
union are used to store same memory location is used to store different type of data.