They both increment the number. ++i
is equivalent to i = i + 1
.
i++
and ++i
are very similar but not exactly the same. Both increment the number, but ++i
increments the number before the current expression is evaluted, whereas i++
increments the number after the expression is evaluated.
int i = 3; int a = i++; // a = 3, i = 4 int b = ++a; // b = 4, a = 4
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