getUserint

getUserint is a utility function used in interactive programs to obtain an integer input from the user. It combines prompting, input parsing, and optional validation to ensure the returned value is an integer within specified bounds.

Typical usage and signature are language-dependent, but a common form is getUserint(message, options) -> int. The message is shown to the user as a prompt. Options may include min and max to enforce a range, a default value to be used when appropriate, and a loop or re-prompt flag that determines whether the function should repeatedly ask for input until a valid value is provided.

Behavior often follows a few standard patterns. The function displays the prompt, reads a line of input, trims whitespace, and attempts to parse it as an integer. If parsing fails or the value falls outside the allowed range, the function may either re-prompt the user or return an error/exception, depending on the implementation. Some variants keep prompting indefinitely until a valid integer is entered, while others return a special error state or throw an exception.

Return value is the chosen integer, assuming valid input. In cases where the user cancels the operation or an unrecoverable error occurs, the behavior is language-specific and may involve raising an exception, returning a sentinel value, or signaling an error to the caller.

Common use cases include command-line tools, menus, and data-entry interfaces where numeric input is required. See also: parseInt, readInt, input validation, and related input-handling utilities.