### Ternary Operators

Can somebody explain in simple terms how this works and what it produces?
 `` `` ``a = --b ? b : (b = -99);``
At first expression --b is executed. If the result is not equal to zero then the result is assigned to a. Otherwise -99 is assigned to b and to a.
You can check this yourself by writing a simple test program.
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Ok, this is good - I see how -99 can be assigned to ' b', but how does 'a' get assigned too? Isn't 'a' only assigned to the operand on the right of the operator, --b?

And what is that second b after the '?' for?

finally, how do you get "is not equal to 0"? Is this because this ternary operator tests for true or false?
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Please read description of the ternary operator in any book on C++ or here in documentation.
that is an short hand if else statement
For exemple:
 ``12345678`` ``````if(a == 0) { a++; } else { a--; }``````

is the same thing to
`(a == 0) ? a++ : a--;`

in our case that would be the same as
 ``123456789`` ``````if(--b) // after the decrement b is diferent then 0 { a = b; } else { b = -99; a = b; }``````
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For `x = a ? b : c ;`, `x = (a ? b : c) ;` is equivalent.

It could be rewritten as an if/else:

 ``1234`` ``````if ( x ) a = b ; else a = c ;``````

With that in mind the original statement above translates to:

 ``1234`` ``````if ( --b ) a = b ; else a = b = -99 ;``````

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Excellent. Thanks
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