To clarify, i++ is equivalent of i = i+1, or i += 1.



int i = 1;
println (i);
i++;
println (i);
i = i + 1;
println (i);
i += 1;
println (i);

would produce:

1
2
3
4


An important thing to note is that i++ would be evaluated "after" the enclosing statement, whereas ++i would be evaluated "before".  Hence:

int i = 1;
println (i++);
println (i);
println (++i);
println (i);

would produce:

1
2
3
3

Thanks, sw01 - that explains my problem. I only wish the online reference materials made this kind of thing more clear. The explanation given of ++ doesn't show how it would be used in loops, which seems pretty basic.