x++ and ++x in for loop

Question

Does using ++x instead of x++ make any difference in a for loop like for example:
for(int x = 0; x < 10; ++x)
{
if ( x % 3 == 0)
cout << x << endl;
}

Answer 1

Nope, but ++x can be ever so slightly faster.

Answer 2

@Jafca:

Is it faster because the resulting code is
"add 1 to...x" (linear discovery)
vs.
"load x. Now what? add 1 to it." (decision tree)
?

Answer 3

You cannot see the difference, at all. It's a funny question for interview but in real life it's not working) If there gonna be a big really big number instead of 10, it will be hard to find the difference even with a chronometer. So... never mind

Answer 4

for ++x it increments the value of x before assigning it while x++ assigns first then increments the value.
eg
int x=9;
int y=++x;
int j=x++;

after executing the code the value of y is 10 while that of j is 9. the same works for the decrementor (--)

Answer 5

the difference comes down to which to use best for your situation.