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Editorial Team
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Asked: 2026-06-06T10:44:01+00:00

int lf = ((t.left==null) = (t.right==null)) ? 1:0; it returns 1 if the statement

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int lf = ((t.left==null) = (t.right==null)) ? 1:0;

it returns 1 if the statement in the bigger parenthesis is true, but in the middle, whats the point of assigning right value to lefT?

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1 Answer

  1. Editorial Team

    Normally you’d have an equal sign to assign. The return of the assigned is the same as the RHS of the expression.

    You’d use an equal sign in a expression within an if to assign and check the result at the same time.

    // return first and third items added if they exist.
if ((list = GetItems()).Length > 2) { return list[0] + list[2]; }

    Right here all you have is a compiler error because t.left==null evaluates to (true/false) and you can’t assign to that.

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