C Tutorials
| Decision Making |
Decision making structures require that the programmer specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the condition is determined to be false.
| Statement | Description |
|---|---|
| if statement | An if statement consists of a boolean expression followed by one or more statements. |
| if . .else statement | An if statement can be followed by an optional else statement, which executes when the boolean expression is false. |
| nested if statement | We can use one if or else if statement inside another if or else if statement(s). |
| switch statement | A switch statement allows a variable to be tested for equality against a list of values. |
nested switch statement |
We can use one swicth statement inside another switch statement(s). |
| ? : Operator |
Exp1 ? Exp2 : Exp 3
Where Exp1, Exp2, and Exp3 are expressions.
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.
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