Question

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How to write a `for` loop over bool values (false and true)

I want to perform the same task twice with bool flag true first and false second. Is there an elegant way to do that (maybe using a loop)?

My idea was to do something like the following but this is a way too complicated.

bool flag = true;
for(int i = 0; i < 2; ++i, flag = !flag)
{
    // ...
}

Answer 1

I figured out a nice way using a do-while-loop.

bool flag = false;
do
{
    // ...
    flag = !flag;
}
while(flag)

Since the code in a do-while-loop is executed at least once, I can toggle the flag at the end and get exactly two runs.