Question

Write difference between Reference and Pointer.

Answer 1

Pointers can point nowhere ( NULL ), whereas a reference always refers to an object. You can't take the addressof a reference like you can withpointers. There's no "referencearithmetic" (but you can take the address of an object pointed by areference and do pointer arithmetic on it as in &obj + 5 ).

Answer 2

Difference between Reference and Pointer:

Pointer:

• The pointer variable returns the value of the variable
• A pointer can be NULL i.e empty.
• We can create a pointer without initializing it.
• We can initialize the pointer at any point in time in our code.

Reference:

• The reference variable returns the address of the variable.
• The reference variable cannot be NULL.
• We can’t create a reference variable without initialization.
• We have to initialize the reference variable when we are creating it otherwise it will throw an error.