Which structure would be used to check if a variable is within a specific range?

Which structure would be used to check if a variable is within a specific range?

• A. for loop
• B. if statement
• C. while loop
• D. elif statement

Answer: (B)

To determine if a variable falls within a specific range, an if statement is the most appropriate structure. This control statement allows for a condition to be evaluated, and if that condition evaluates to true, the code within the block of the if statement is executed. In the context of checking a range, the if statement can directly assess whether the variable meets both lower and upper bounds using comparison operators. For example, you might use an if statement like this: ```python if lower_bound <= variable <= upper_bound: print("Variable is within the range.") ``` This concise syntax allows clear and direct checking of the variable's range without the necessity of iteration or complex logic, making it effective and easy to understand. In contrast, other structures like loops or additional if conditions serve different purposes. For instance, for and while loops are used for repeated execution of code based on conditions, while elif is typically used for multiple conditions after the first if statement, rather than checking a singular range. Thus, the if statement is the ideal choice for range checking.

To determine if a variable falls within a specific range, an if statement is the most appropriate structure. This control statement allows for a condition to be evaluated, and if that condition evaluates to true, the code within the block of the if statement is executed. In the context of checking a range, the if statement can directly assess whether the variable meets both lower and upper bounds using comparison operators.

For example, you might use an if statement like this:

if lower_bound <= variable <= upper_bound:

print("Variable is within the range.")

This concise syntax allows clear and direct checking of the variable's range without the necessity of iteration or complex logic, making it effective and easy to understand. In contrast, other structures like loops or additional if conditions serve different purposes. For instance, for and while loops are used for repeated execution of code based on conditions, while elif is typically used for multiple conditions after the first if statement, rather than checking a singular range. Thus, the if statement is the ideal choice for range checking.