for(;i<n;i++) or for(;i<n;++i) ?

Question

The second form of the loop performs better.

// For every i++ operation:
temp = i+1;
// in next statement
i = temp;
// happens.

// For every ++i operation:
i += 1;
// happens.

The difference itself is very unnoticeable for general use, but when running loops for large datasets or making real-time applications this difference counts.
Prefer ++i.

/* it's not a question, it's a post. new to the platform so posted it likewise */

Answer 1

my point was that ++i should be preferred over i++. and for loop was used for illustration as it is the most frequent place of use where this operation can make lot of difference.

Answer 2

its all the same as i think so!!!
but can any one tell me the diffrence clearly please??
thank you

Answer 3

For integers, there is no difference between pre- and post-increment.

If i is an object of a non-trivial class, then ++i is generally preferred, because the object is modified and then evaluated, whereas i++ modifies after evaluation, so requires a copy to be made.

please refer http://stackoverflow.com/questions/4261708/i-or-i-in-for-loops for more answers n more clarification.
if still in doubt, will be happy to help

Answer 4

added a code to see the time difference https://code.sololearn.com/cJXYpDDaH3Y9/

run multiple times to see the average time difference, and ++i mostly outrun i++.
as mentioned earlier for int it is not much difference.
my o/p mostly was:
0.75 for i++
0.73 for ++i