How Can I Efficiently Check if a Variable Falls Within a Specific Range in Programming?

Using Logical Operators to Compare Variables with Range Values

When writing conditional statements in programming, it's often necessary to compare variables to specific values or ranges. In mathematics, range notation is commonly used to indicate that a value must lie within certain bounds. This notation typically uses symbols like "<" (less than) and ">" (greater than).

If you've tried using a similar notation in an if statement, such as:

if(18 < age < 30)

you may have noticed unusual behavior. This is because most programming languages don't support this syntax directly. Instead, we need to use logical operators to establish the range condition.

To compare a variable to a range of values, we can use the logical AND (&&) operator. This operator combines two logical expressions into a single statement that evaluates to true only if both expressions are true.

For example, to check if a variable named "age" is between 18 and 30, we can write:

if (18 < age && age < 30) /*blah*/;

This statement checks if both conditions (age is greater than 18 and less than 30) are true. If they are, the code within the if statement will execute.

Therefore, the answer is:

if (18 < age && age < 30) /*blah*/;

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