Interested to Buy Any Domain ? << Click Here >> for more details...
How can you quickly find the number of elements stored in a
a) static array b) dynamic array ?
- 5 Answers
- 14490 Views
- Lucent, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / santhosh kumar sahukari
1.for static array we can find the no.of elements of its by using sizeof() operator and data type of that array.
2.we can find the no.of elements by its subscript in static array.
eg: int arr[10]
we can use sizeof(arr) to find the no.of elements it v l print 20,then we can divide it by 2 as size of int is 2.
2.subscript tells us it has 10 elements.
for dynamic array we cant use sizeof() operator.
we cant say dat how many elements it will have..it will be decided at runtime only.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / jaroosh
a) sizeof(array)/sizeof(element)
b) you cant (well, you can, eg. by using realloc, counting
from 0 up, and checking the result etc. but this is absurd),
its best to keep track somehow how many elements are there
in the array, but the BEST solution is...do NOT use dynamic
arrays at all, use std containers instead like vector.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / murali
for static array start from highest index to lowest (
normal conditions apply*)
if dynamic array is a Container type, size() / length()
will do. if not process the nodes.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / brainless
b) use pointer of last element - pointer of first element + 1
However, we should know the last element's pointer...
| Is This Answer Correct ? | 0 Yes | 2 No |
What is the use of endl in c++ give an example?
Define a way other than using the keyword inline to make a function inline?
Find the second maximum in an array?
What is abstraction with real time example?
Which of the following is evaluated first: a) && b) || c) !
Enter n no. of element and delete value from desire position
How to avoid changing constant values?
What is rtti in c++?
is throwing exception from a constructor not a good practice ?
Can there be at least some solution to determine the number of arguments passed to a variable argument list function?
How new/delete differs from malloc()/free?
What is pointer to array in c++?
STL 
