Which data type is used for boolean flags?

Which data type is used for boolean flags?

• A. String
• B. Boolean
• C. Integer
• D. Float

Answer: (B)

Boolean flags store true or false values, so the boolean data type is the natural choice for them. Using booleans keeps logic simple and clear—flags can be tested directly in conditionals like if aFlag is true, making the code readable and efficient. Storing true/false as text in a string introduces unnecessary comparisons and potential typos. Using an integer could work (0 for false, 1 for true), but it sacrifices semantic clarity and can lead to bugs if other numbers appear. Floats are for decimal numbers and would be confusing for a simple on/off state. So the boolean data type is the right fit because it explicitly represents a two-state value and supports straightforward conditional logic.

Boolean flags store true or false values, so the boolean data type is the natural choice for them. Using booleans keeps logic simple and clear—flags can be tested directly in conditionals like if aFlag is true, making the code readable and efficient.

Storing true/false as text in a string introduces unnecessary comparisons and potential typos. Using an integer could work (0 for false, 1 for true), but it sacrifices semantic clarity and can lead to bugs if other numbers appear. Floats are for decimal numbers and would be confusing for a simple on/off state.

So the boolean data type is the right fit because it explicitly represents a two-state value and supports straightforward conditional logic.