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What is the difference between Pointer and a Reference?
When you would use them?
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Answer / 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 |
Answer / man
Reference is alias of a variable i.e. a constant pointer
which reference to a variable and can not be NULL.
You can not can get the address of ref. They are used as a
variable.
Pointers are variale that hold address of variable and can
be NULL. And can point to any number of variable.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / vinay bondade
A Pointer is not a condt pointer unless you define it in
that way,but a referrence on the contrary is a const
pointer by default and adding to this implementation it is
deferrenced automatically.
| Is This Answer Correct ? | 1 Yes | 3 No |
Answer / nav
pointer are variable and no need to be initilise,but
refrence is the rename of variable and must be
initilise.pointer also assign null value but reference not
assign null value.
| Is This Answer Correct ? | 1 Yes | 3 No |
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Write a program to read the data and evaluate the results of the election. Print all output to the screen. Your output should specify: The total number of votes, the number of valid votes and the number of spoilt votes. The winner(s) of the election. Hint: An appropriate search should be used to determine the winner(s). The votes obtained by each candidate sorted in terms of the number of votes obtained. Hint: An appropriate sort should be used to sort the candidate(s). The Source code should be saved as VotingSystem. Project Input: Candidates’ Names and Numbers 2501 Victor Taylor 2502 Denise Duncan 2503 Kamal Ramdhan 2504 Michael Ali 2505 Anisa Sawh 2506 Carol Khan 2507 Gary Owen Votes 3 1 2 5 4 3 5 3 5 3 2 8 1 6 7 7 3 5 6 9 3 4 7 1 2 4 5 5 1 4 0 Project Output: Invalid vote: 8 Invalid vote: 9 Number of voters: 30 Number of valid votes: 28 Number of spoilt votes: 2 The winner(s): 2503 Kamal Ramdhan 2505 Anisa Sawh Candidate Score 2503 Kamal Ramdhan 6 2505 Anisa Sawh 6 2501 Victor Taylor 4 2504 Michael Ali 4 2502 Denise Duncan 3 2507 Gary Owen 3 2506 Carol Khan 2
Why do we need pointers?
STL 
