how the value decrease in increment operater while in prefix???

Answer 1

increment never leads to the decrement,
whether it's prefix or suffix,
post your script where you got the issue.

Answer 2

yeah recently i confirmed ittt...thanx for ansawering

Answer 3

if the increment operator is in prefix the value is calculated before it is used in any following calculations.

for example

a = 5;
b = ++a * 10;
cout << b;

would return 60 as the 1 is added on to a (5) before the multiplication

Answer 4

oh actually i was not calculating the increment operator