Question

I have a boolean expression: A && (B || C && D)

However A, B, C, and D are quite long character-wise so representing it all in a single line is not possible. Let us assume for this example that A, B, C, and D will be on their own lines.

What is a recommended way to represent this expression using indentations extra parenthesis if necessary, line breaks and so on to maximize human readability.

Answer 1

First of all, according to your comment, you can use boolean variables such as bAreFooAndBarEqual, only have their name carry a deeper meaning, and follow your own naming conventions.

As for your specific example, I would explicitly show that I want the && to take precedence over the ||, and so add another pair of parentheses: A && (B || (C && D)).
Then, I would indent on each bracket opening, having the operator to the left of the operands (this is a personal taste, you should see what looks clearest to you):

A
&& (B
    || (C
        && D))

Of course, this is just a personal taste, and you should think what feels most natural and looks the most clear to you.