The ? Operator : Ternary Operator « Operator « C# / CSharp Tutorial

1. The ? operator is often used to replace certain types of if-then-else constructions.
2. The ? is called a ternary operator because it requires three operands.

It takes the general form

1. where Exp1 is a bool expression, and Exp2 and Exp3 are expressions.
2. The type of Exp2 and Exp3 must be the same.

The value of a ? expression is determined like this:

1. Exp1 is evaluated.
2. If it is true, then Exp2 is evaluated and becomes the value of the entire ? expression.
3. If Exp1 is false, then Exp3 is evaluated, and its value becomes the value of the expression.