| 3. 8. 1. The ? Operator |
|
|
- The ? operator is often used to replace certain types of if-then-else constructions.
- The ? is called a ternary operator because it requires three operands.
|
It takes the general form |
|
|
- where Exp1 is a bool expression, and Exp2 and Exp3 are expressions.
- The type of Exp2 and Exp3 must be the same.
|
The value of a ? expression is determined like this: |
- Exp1 is evaluated.
- If it is true, then Exp2 is evaluated and becomes the value of the entire ? expression.
- If Exp1 is false, then Exp3 is evaluated, and its value becomes the value of the expression.
|
