What is the difference between Pointer and a Reference?
When you would use them?
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Answer Posted / srihariraju
A reference just renames a memory location for the
reader/programmer. Its more like renaming a constant with
#define. The reference does not really 'contain' the
address, instead the comiler *could* just substitute the
address for the reference at the assembly code level.
A pointer is a variable (it 'must' have a memory location
of its own (barring odd compiler tricks)) that *can* be
used like a reference or it can point to nothing (NULL) (a
reference cannot do that) and a pointer can get new memory
from the os (new command) while a reference must 'point' to
existing memory.
| Is This Answer Correct ? | 14 Yes | 0 No |
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