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### Ternary Operator

Ternary operator is a compact conditional assignment.

It serves to set a value of a variable depending on a boolean expression or a boolean variable.

    a = b ? c : d;

The expression above is same as:

    if ( b ) {
     	a = c;
    } else {
     	a = d;
    }

The `a`, `c` and `d` variables must be of the same data type (or type of `c` and `d` must be convertible to type of `a` using automatic conversion). The `b` variable is `boolean`.

`b`, `c` or `d` do not have to be variables. They may be constants or expressions. `a` has to be a variable.

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