Choosing Fruits: Programming Constructs for Apples, Oranges, and Bananas

Which programming construct is best for selecting apples, oranges, or bananas?

Question

A program needs to choose apples, oranges, or bananas based on an input.

Which of the following programming constructs is BEST to use?

Answers

Explanations

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A. B. C. D.

B.

The BEST programming construct to use for choosing apples, oranges, or bananas based on an input would be the "If" statement.

An "If" statement is a conditional statement that allows the program to evaluate an expression or condition and then execute a block of code only if the condition is true. In this case, the input could be evaluated to determine whether it is equal to "apple", "orange", or "banana", and then the appropriate block of code could be executed based on the result.

Here is an example of how the "If" statement could be used in Python code:

python
fruit = input("Please enter a fruit: ") if fruit == "apple": print("You chose an apple.") elif fruit == "orange": print("You chose an orange.") elif fruit == "banana": print("You chose a banana.") else: print("Invalid input.")

In this example, the "input" function is used to prompt the user to enter a fruit. The "If" statement then evaluates the input using the "==" operator to determine whether it is equal to "apple", "orange", or "banana". If the input matches one of those values, the appropriate print statement is executed. If the input does not match any of those values, the "else" block is executed and an error message is displayed.

Therefore, in summary, the correct answer to the question is B) If, as it provides the necessary logic to evaluate the input and execute the appropriate block of code based on the input value.