Implementing ternary operator without any conditional statement

How to implement ternary operator in C++ without using conditional statements.
In the following condition: a ? b: c 
If a is true, b will be executed. 
Otherwise, c will be executed.
We can assume a, b and c as values.
 

1. Using Binary Operator

We can code the equation as : 
Result = (!!a)*b + (!a)*c 
In above equation, if a is true, the result will be b. 
Otherwise, the result will be c.
 

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2. Using Array

int arr[] = { b, a };

We can return the value present at index 0 or 1 depending upon the value of a.

• For a= 1, the expression arr[a] reduces to arr[1] = b.
• For a= 0, the expression arr[a] reduces to arr[0] = c.
   

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Asked In : Nvidia